Airstrikes kill 22 in Idlib

Some 22 people are dead, including 15 children, after airstrikes hit the Syrian city of Idlib.

Some 22 people are dead, including 15 children, after airstrikes hit the Syrian city of Idlib. (AAP)

Syrian first responders say they have tallied 22 civilian fatalities from a presumed Russian or Syrian government airstrike on the rebel-held city of Idlib.

The Civil Defense search-and-rescue group, also known as the White Helmets, said 15 children have been reported killed by the pre-dawn airstrike on Wednesday in northwest Syria.

It said its rescuers had been working all day to reach victims in the rubble.

The Britain-based Syrian Observatory for Human Rights monitoring group reported 21 civilians killed.

It said the aircraft behind the attack were believed to be Russian. Syrian government aircraft are also known to fly raids over Idlib.

The attack occurred in the city's Qaboun neighbourhood.