Quetta, Pakistan: Pakistani security forces have killed a senior al-Qaeda commander and detained his wife in an overnight raid on his hideout in the southwestern province of Baluchistan, a provincial minister said on Sunday.

The security forces also took the couple's two young daughters into custody during the raid in the Chaghi district.

‘An important al-Qaeda commander –namely Umar Lateef, a Pakistani national–was killed in an encounter with local security agencies,’ provincial home minister Sarfraz Bugti told reporters.

The minister said Umar Lateef, his wife Tayyaba alias Fareeha Baji, one brother and two daughters both aged under five had lived in Chaghi for the last 8-10 months after moving from the Afghan border province of Nimruz.

‘Lateef was a senior commander of al-Qaeda for Pakistan's Baluchistan and south Punjab regions,’ Bugti said. 

‘His brother Bilal succeeded in escaping during the raid, probably to neighbouring Afghanistan.’

Bugti said Punjab province had offered a reward of two million rupees ($20,000) for Lateef and half a million rupees for his wife, who was head of al-Qaeda's women's wing in south Punjab and Baluchistan.

The minister said Lateef had established an al-Qaeda network and was supervising its ‘terrorist activities and providing travel and logistical facilities to terrorists in both Baluchistan and south Punjab as well as in Afghanistan’.

His wife is being interrogated by security officials.

al-Qaeda announced last September it was setting up a chapter in the sub-continent to counter the spread of the rival Islamic State group, which controls a broad swathe of territory in Iraq and Syria.

Pakistan launched a major military operation against Taliban and al-Qaeda-led militants in the northwestern tribal regions in June last year.

The operation intensified in December after Taliban militants attacked a school in Peshawar and killed more than 150 people, mostly children.

Mailk Ishaq, the leader of an anti-Shiite group behind some of Pakistan's worst sectarian atrocities, was killed in a shootout with police last week along with 13 other militants, authorities said.