An explosion in a shopping centre in Lahore killed at least eight people
Security forces cordoned off the residential neighbourhood, also home to banks and coffee shops, rescue officials said, after what one bank worker said was a "frightening" explosion.
"We left the building and saw that the motor-bikes parked outside were on fire and all the windows in the surrounding buildings were shattered," Mohammad Khurram said.
Punjab police spokesman Nayab Haider said that the explosion was caused by a "planted bomb" that was either time- or remotely detonated.
No one was allowed to leave or enter the area because the bomber was suspected to be at large, officials said.
The motor-bikes were on fire and all the windows were shattered
Reports of a second explosion turned out to be a tyre blowout that caused panic due to the tense atmosphere in the city, a government official said.
Pakistan has been struck by a wave of militant attacks in recent weeks, killing at least 130 people across the country and leaving hundreds wounded. The worst of the attacks was at a Sufi shrine in southern Sindh province that killed 90 people.
Thursday's bombing was the second attack in Lahore in two weeks.
Pakistan Shrine Bombing Kills in Worst Attack in Months Thu, February 16, 2017
At least 70 people were killed and over 150 others injured when a suspected suicide bomber blew himself up inside the crowded shrine of revered Sufi Lal Shahbaz Qalandar in Sehwan town in Pakistan's Sindh province, the fifth deadly terror attack in the country within a week.
Play slideshow EPA 1 of 20
A man reacts after a suicide bomb attack that targeted the devotees at the shrine of Sufi Muslim saint Lal Shahbaz Qalandar, in Sehwan, Pakistan
Today's bombing was the second in Lahore in two weeks
A suicide bombing on February 13 killed at least 13 people and wounded more than 80 at a protest near the provincial assembly.
Government and military officials have vowed extensive operations to hunt down militants across the country and Pakistan's border with Afghanistan has been shut down due to security concerns.
After the shrine bombing, Pakistani security forces said they had killed more than 100 suspected militants in targeted campaigns across the country.
- How safe is it to travel to Pakistan?
- Members of Rochdale child sex grooming gang facing removal from UK
- At least 10 killed and 30 injured as explosion rocks Lahore