<p>All eight people, including a tourist guide, were found dead after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20).&nbsp;</p>

<p>Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape.</p>

<p>Investigators said the search and rescue operation had ended and efforts were being made to identify the individuals.</p>

<p>Moscow&nbsp;Mayor Sergei Sobyanin on Monday described the accident as a "terrible tragedy."</p>

<h2><strong>Criminal investigation launched</strong></h2>

<p>Authorities informed a criminal investigation was being opened into the organisers of the tour. Authorities are describing the act as "illegal incursion" while raising concerns that safety standards were not adhered to.</p>

<p>Police have identified and charged three people for organising the tour, BBC reported. However, one person is said to have left the country for the UAE.</p>

<p>Interestingly, more than 20 people had&nbsp;initially signed up for the tour but most of them withdrew owing to the bad weather alert.</p>

<h2><strong>Shelters available inside underground sewers</strong></h2>

<p>An urban explorer from Moscow earlier claimed that there were shelters inside the tunnels to help people take refuge during emergency situations.</p>

<p>"I hoped that maybe I would still be able to find some survivors there. There are two shelter points, but there was no one there," urban explorer Daniil Davydov told the RIA news agency.</p>

<p>Moscow’s iconic 19th-century underground tunnels are popular among tourists. Several tour guides offer trips down the vast network of sewers to curious tourists but most of them are undertaken only after taking permission from the local authorities.</p>

<p><a href="https://www.wionews.com/world/i-want-to-putin-says-moscow-will-replace-ukrainian-grain-shipments-to-africa-618740"><strong>Also read:&nbsp;`I want to...`: Putin says Moscow will replace Ukrainian grain shipments to Africa</strong></a></p>

<p>However, it was unclear whether the tourists, who went for exploration on Sunday, had sought prior approval.</p>

<h2><strong>More about Moscow’s underground tunnel exploration</strong></h2>

<p>Through the tour, explorers get to discover the hidden depths of Moscow. The journey goes through uncharted corners of the city, covering underground passages that delve 15 metres&nbsp;deep into the Moscow sewer system.</p>

<p><strong>Watch:&nbsp;Russian capital comes under drone attack allegedly from Ukraine</strong></p>

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<p>People travel 2.5 to 3 km through subterranean tunnels, witnessing mesmerising waterfalls and natural springs. The tour guides help people understand the history of Moscow's sewer system and unveil operational urban life support systems during this captivating exercise.&nbsp;&nbsp;</p>

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All eight people, including a tourist guide, were found dead after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20). Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape.

All eight people, including a tourist guide, were found dead after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20). Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape. Investigators said the search and rescue operation had ended and efforts were being made to identify the individuals. Moscow Mayor Sergei Sobyanin on Monday described the accident as a "terrible tragedy." Criminal investigation launched Authorities informed a criminal investigation was being opened into the organisers of the tour. Authorities are describing the act as "illegal incursion" while raising concerns that safety standards were not adhered to. Police have identified and charged three people for organising the tour, BBC reported. However, one person is said to have left the country for the UAE. Interestingly, more than 20 people had initially signed up for the tour but most of them withdrew owing to the bad weather alert. Shelters available inside underground sewers An urban explorer from Moscow earlier claimed that there were shelters inside the tunnels to help people take refuge during emergency situations. "I hoped that maybe I would still be able to find some survivors there. There are two shelter points, but there was no one there," urban explorer Daniil Davydov told the RIA news agency. Moscow’s iconic 19th-century underground tunnels are popular among tourists. Several tour guides offer trips down the vast network of sewers to curious tourists but most of them are undertaken only after taking permission from the local authorities. Also read: `I want to...`: Putin says Moscow will replace Ukrainian grain shipments to Africa However, it was unclear whether the tourists, who went for exploration on Sunday, had sought prior approval. More about Moscow’s underground tunnel exploration Through the tour, explorers get to discover the hidden depths of Moscow. The journey goes through uncharted corners of the city, covering underground passages that delve 15 metres deep into the Moscow sewer system. Watch: Russian capital comes under drone attack allegedly from Ukraine × People travel 2.5 to 3 km through subterranean tunnels, witnessing mesmerising waterfalls and natural springs. The tour guides help people understand the history of Moscow's sewer system and unveil operational urban life support systems during this captivating exercise. WATCH WION LIVE HERE ×

Moscow sewer tragedy: All 8 missing people confirmed dead due to floods

<p>At least three people were reported killed and several others feared trapped after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20).&nbsp;</p>

<p>Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape.</p>

<p>So far, three dead bodies have been recovered while others are missing, Russia’s state-run TASS news agency reported.</p>

<p>"The body of an unidentified woman has been found in the Moskva River, making her the third person to die after a tour of the underground sewers," the TASS report said.</p>

<h2><strong>Shelters available inside underground sewers</strong></h2>

<p>An urban explorer from Moscow claimed that there were shelters inside the tunnels to help people take refuge during emergency situations.</p>

<p>"I hoped that maybe I would still be able to find some survivors there. There are two shelter points, but there was no one there," urban explorer Daniil Davydov told the RIA news agency.</p>

<p>Authorities informed a criminal investigation was being opened into the organisers of the tour.</p>

<p>Moscow’s iconic 19th-century underground tunnels are popular among tourists. Several tour guides offer trips down the vast network of sewers to curious tourists but most of them are undertaken only after taking permission from the local authorities.</p>

<p><a href="https://www.wionews.com/world/i-want-to-putin-says-moscow-will-replace-ukrainian-grain-shipments-to-africa-618740"><strong>Also read:&nbsp;`I want to...`: Putin says Moscow will replace Ukrainian grain shipments to Africa</strong></a></p>

<p>However, it was not clear whether the tourists, who went for exploration on Sunday, had sought prior approval.</p>

<h2><strong>More about Moscow’s underground tunnel exploration</strong></h2>

<p>Through the tour, explorers get to discover the hidden depths of Moscow. The journey goes through uncharted corners of the city, strolling along underground passages that delve 15 meters deep into the Moscow sewer system.</p>

<p><strong>Watch:&nbsp;Russian capital comes under drone attack allegedly from Ukraine</strong></p>

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<p>People travel 2.5 to 3km through subterranean tunnels, witnessing mesmerising waterfalls and natural springs. The tour guides help people understand the history of Moscow's sewer system and unveil operational urban life support systems during this captivating exercise.&nbsp;&nbsp;</p>

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<p><strong>WATCH WION LIVE HERE</strong></p>

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At least three people were reported killed and several others feared trapped after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20). Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape.

At least three people were reported killed and several others feared trapped after they undertook a guided tour of Moscow’s sewer system on Sunday (August 20). Following a sudden, heavy downpour in Moscow, the water level in the underground sewers increased rapidly, leaving the tourists gasping for air and struggling to escape. So far, three dead bodies have been recovered while others are missing, Russia’s state-run TASS news agency reported. "The body of an unidentified woman has been found in the Moskva River, making her the third person to die after a tour of the underground sewers," the TASS report said. Shelters available inside underground sewers An urban explorer from Moscow claimed that there were shelters inside the tunnels to help people take refuge during emergency situations. "I hoped that maybe I would still be able to find some survivors there. There are two shelter points, but there was no one there," urban explorer Daniil Davydov told the RIA news agency. Authorities informed a criminal investigation was being opened into the organisers of the tour. Moscow’s iconic 19th-century underground tunnels are popular among tourists. Several tour guides offer trips down the vast network of sewers to curious tourists but most of them are undertaken only after taking permission from the local authorities. Also read: `I want to...`: Putin says Moscow will replace Ukrainian grain shipments to Africa However, it was not clear whether the tourists, who went for exploration on Sunday, had sought prior approval. More about Moscow’s underground tunnel exploration Through the tour, explorers get to discover the hidden depths of Moscow. The journey goes through uncharted corners of the city, strolling along underground passages that delve 15 meters deep into the Moscow sewer system. Watch: Russian capital comes under drone attack allegedly from Ukraine × People travel 2.5 to 3km through subterranean tunnels, witnessing mesmerising waterfalls and natural springs. The tour guides help people understand the history of Moscow's sewer system and unveil operational urban life support systems during this captivating exercise. WATCH WION LIVE HERE ×

Moscow: Three dead after guided tour to underground sewer system amid heavy rains

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Moscow sewer tragedy: All 8 missing people confirmed dead due to floods

Moscow: Three dead after guided tour to underground sewer system amid heavy rains