(File photo)A helicopter carrying U.S. military officials arrive at the headquarters of the Kurdish fighters from the People's Protection Units (YPG) that was hit by Turkish airstrikes in Mount Karachok near Malikiya, Syria April 25, 2017.(Reuters photo)

DAMASCUS, June 3 (Xinhua) -- U.S.-led airstrikes targeted a residential building in Syria's northern city of Raqqa, killing 43 civilians, state TV reported on Saturday.

The airstrikes targeted the al-Jamili building in Raqqa, said the TV, adding that most of those killed were women and children.

The rate of civilian causalities by U.S.-led airstrikes has increased recently as a result of the intensification of U.S. airstrikes on Raqqa, the de facto capital of the Islamic State (IS) group, and other IS strongholds in northern and eastern Syria.

A day earlier, 20 civilians were killed when a U.S.-led airstrike targeted residential buildings in Raqqa, including a hospital and a hotel.

Last Sunday, 20 civilians were killed by similar airstrikes in Raqqa.

Last Thursday, 35 civilians were killed by airstrikes on IS-held city of Mayadeen in the eastern province of Deir al-Zour.

The Syrian government has repeatedly denounced the attacks targeting civilians, branding the operation of the U.S.-led anti-terror coalition in Syria as "illegitimate."