A pair of suicide bombers attacked the house of a top Pakistani security officer Wednesday in the southwestern city of Quetta, killing at least 19 people including the officer's wife.

Police said the first attacker detonated his vehicle outside the residence of the deputy head of Pakistan's paramilitary Frontier Corps in Baluchistan province. After that blast, a second bomber on foot stormed the officer's house and detonated his explosives.

The house was badly damaged in the attack.

While no one immediately claimed responsibility, both Taliban militants and nationalist separatists are active in the area.

Pakistan's paramilitary force has been very active in the fight against the country's domestic Taliban group throughout the country's northwest, including the tribal regions bordering Afghanistan.

Also earlier this week, the paramilitary force took part in an operation along with the U.S. and Pakistani spy agencies in Quetta to capture suspected senior al-Qaida operatives.