The blast appeared to have been an attack targeting a census team. Photograph: (AFP)
The Tehreek-e-Taliban Pakistan (TTP, or Pakistani Taliban) claimed responsibility for the attack in a message sent to AFP
At least five people have been killed and 10 wounded in a blast which appeared to have been a Taliban attack targeting a census team in Pakistan's eastern city of Lahore Wednesday, officials and the militants said.
Security forces cordoned off the area on Bedian Road in the bustling capital of Punjab province after the blast, which rescuers said occurred just before 8:00 am local time. A forensics team could also be seen at the site.
The Tehreek-e-Taliban Pakistan (TTP, or Pakistani Taliban) claimed responsibility for the attack in a message sent to AFP.
Punjab health minister Khawaja Imran Nazir said five people had been killed, with the toll confirmed by a security source and a Lahore administration official.
A police official said the census team had been the target, though the Pakistan Board of Statistics declined to comment. The TTP in its statement said it had carried out the attack in revenge on security forces.
Teams of enumerators backed by the military and security forces are carrying out Pakistan's first census in almost two decades, an enormous and highly charged task that could redraw the country's political map one year before national parliamentary elections.
The police official said at least 10 people had been wounded, though rescuers gave a higher figure of 18.
Some officials initially described the incident as a gas cylinder explosion, but said an investigation was ongoing. There was no immediate comment from the military.
"There is a possibility that it was a suicide attack," Lahore official Abdullah Sumbal said.
"The census is a national duty, and we will complete this task," he added. "There was no lack of security, but you know how difficult it is to deal with suicide attacks."
Lahore has been on edge since a wave of violent attacks across Pakistan in February killed 130 people and shook citizens emboldened by growing security.
The attacks included a bomb blast in the eastern city on February 13 which killed 14 people in an assault claimed by Jamaat-ul-Ahrar (JuA), a faction of the Pakistani Taliban.
Ten days later a fresh blast sent panic through the city when it killed eight people, though officials later said it was a gas leak, not an attack as initially feared.
Wednesday's explosion came days after at least 22 people were killed and 57 wounded on March 31, when a car bomb tore through a market in a mainly Shiite area of Pakistan's tribal belt in an attack that was also claimed by JuA.
February's assaults also included a suicide blast at a Sufi shrine in Sindh province which killed 90 people and was claimed by Islamic State.