A bomb ripped through the office of a member of Pakistan's National Assembly in central Taunsa area on Wednesday, leaving at least seven people dead and 13 others injured. A militant group that broke from the Taliban last year has claimed responsibility for the attack. 

The deadly explosion at the office of lawmaker Sardar Amjad Khosa, who belongs to the ruling Pakistan Muslim League-Nawaz (PML-N) party, in Dera Ghazi Khan district in Punjab province led to a fire. Khosa was reportedly in Islamabad at the time of the attack. 

"Seven people are dead, 13 others are wounded and have been shifted to Tehsil Headquarters Hospital in Taunsa," District Police Officer DG Khan Ghulam Mubasshir Maken told The Express Tribune. 

The Tehreek-e-Taliban Pakistan Jamaat-ul-Ahrar, a splinter group of the Pakistani Taliban, claimed responsibility in a statement released by Taliban spokesperson spokesman Eshanullah Ehsan. 

The group had reportedly fallen out with the Tehreek-e-Taliban last year. 

Two months ago, another member of the Pakistan Muslim League-Nawaz (PML-N) party, Punjab home minister Colonel (retd.) Shuja Khanzada, was killed in a suicide attack.