Pakistan has held 216 suspects after a major sweep by the military and the police saw more than 5,000 detained over the Easter Sunday suicide bomb attack.
Prime Minister Nawaz Sharif vowed to crack down on Islamist militants in the country after the attack in Lahore claimed the lives of more than 70 people, including 29 children.
Grieving family and friends gathered for the funerals of at least four of those killed in the Easter Sunday bombing in Lahore, Pakistan.
Christian celebrations held in a public park were targeted by the blasts, which killed at least 70 people - 29 of whom were children.
Hundreds more were injured.
The Pakistani Taliban's Jamaat-ur-Ahrar faction, which once declared loyalty to the so-called Islamic State group, has claimed responsibility for the suicide bombing, which has been roundly condemned by world leaders including the Pope.
The Pakistani government has now launched a paramilitary crackdown on Islamist militants in the Punjab province, with several raids carried out since the attack resulting in an unspecified number of arrests and the recovery of caches of arms.
It was the deadliest attack in Pakistan since the December 2014 massacre of 134 schoolchildren at a military-run academy in Peshawar.
Users thousands of miles from Lahore have reported being asked to check in safe following the bombing which killed at least 65 people.
Police say at least 280 other people are injured, and most of the dead and injured are women and children.