Published: Apr 11, 2018, 03:13 IST | Updated: Apr 11, 2018, 03:13 IST
Riyadh's air pollution stems from highly prevelant sandstorms, as well as pollutants emerging from heavy traffic and industrial waste.
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At least three loud blasts were heard and three clouds of smoke could be seen in the sky above the centre of Saudi Arabia's capital Riyadh
At least three loud blasts were heard and three clouds of smoke could be seen in the sky above the centre of Saudi Arabia's capital Riyadh on Wednesday, according to Reuters witnesses.
There was no immediate comment from the government.