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.
The Taliban faction who claimed to have carried out Easter Sunday's bomb attack in Pakistan have issued a new threat, singling out the nation's media and Prime Minister Nawaz Sharif.
"Everyone will get their turn in this war, especially the slave Pakistani media," Ehsanullah Ehsan, spokesman for extremist group Jamaat-ur-Ahrar, tweeted. "We are just waiting for the appropriate time."
Sunday's attack, which killed 70 people including 29 children, led to at least 160 raids that targeted anyone suspected of Islamist extremism after Mr Sharif announced new powers for arrests and interrogations.
Ehsan issued a direct to the Pakistani prime minister, tweeting: "Let Nawaz Sharif know that this war has now come to the threshold of his home. The winners of this war will, God willing, be the righteous mujahideen."
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.