Beirut: Syrian air force raids killed at least 21 people, including several children, in the Daesh-held areas of Al Bab and Qbasin in the northern province of Aleppo, said the Observatory.

The regime air force has killed thousands of people, mostly civilians living in areas out of government control, ever since it was first deployed in the country’s war in July 2012.

The UN and international rights groups have repeatedly called on the government to refrain from using its air force against inhabited areas.

Nearly four years of civil war ravaging the country have killed an estimated 200,000 people and also displaced half of the population.

Meanwhile, at least 44 members of Daesh were killed in clashes with Kurdish troops in Syria on Thursday, a monitoring group said.

Thirty of the militants were killed fighting against members of the Kurdish People’s Protection Units (YPG) in the village of Qassiab in Hasakeh province, according to the Syrian Observatory for Human Rights.

The YPG regained control of the village, two days after it was seized by the militants, said the Britain-based group, which has a wide network of activists on the ground in Syria.

Three Kurdish fighters were also killed in the clashes, it added.

Another 14 militants and an YPG fighter were killed fighting in the flashpoint town Kobani in northern Syria, said the Observatory.

Fighting over Kobani began in mid-September, when Daesh launched a bid to take it over.

A US-led coalition has been launching air strikes against Daesh positions in Syria since September 23.

Meanwhile, the father of a Jordanian pilot captured by Daesh fighters after his plane crashed in Syria said he did not consider his son a hostage and called on his captors to treat him as a “guest”.

Jordan is one of several Arab countries participating in the US-led military mission to bomb fighters from the Islamist group, which holds territory in both Syria and Iraq.

First Lieutenant Mu’ath Al Kasaesbeh, 27, was captured after his jet crashed in northeast Syria on Wednesday during a bombing mission against the militants. The US military, which commands the operation, said enemy fire was not the cause of the crash.

Al Kasaesbeh, who comes from a prominent Jordanian Sunni family, is the first pilot from the international coalition known to have been captured by Daesh.

Daesh has a history of killing enemy soldiers that it captures on the battlefield and beheading Western civilians that it takes hostage.