At least seven persons were killed while dozens others injured in a blast that occurred in Tableeghi Markaz (Islamic preaching center) here on Thursday, officials said.
According to police, the blast took place at roof of Markaz when Maghrib prayer was underway.
Seven people killed on spot while over 45 were wounded in Thursday blast.
Condition of many injured reported critical which feared increase in death toll.
Over 800 people were gathered for a religious activity. Blast was so powerful that it damaged Markaz building badly.
The injured people were shifted to Lady Reading Hospital where an emergency was imposed.
Police and rescue teams reached at the crime scene and started rescues works.
Police also started its investigations; initial report suggested it was a cylinder blast however nature of blast was not detected so far.