At least 29 civilians, including women and children, have been killed in fresh airstrikes carried out by the U.S.-led coalition in Syria’s northern city of Raqqah over the past 24 hours, according to a monitoring group.

The so-called Syrian Observatory for Human Rights (SOHR) has said that a family of 14 who had been displaced from the central city of Palmyra were among the victims.

The victims included 14 children and nine women, the report said.

The SOHR also warned that the death toll could rise since dozens of people have been critically injured in the aerial assaults.

Washington and its allies launched a military campaign against ISIS positions inside Iraq in August 2014 after the terrorist group took control over parts of the Arab country.

On numerous occasions, the strikes have resulted in civilian casualties and failed to fulfill their aim of countering terrorism.

In July, the coalition admitted that its airstrikes had killed at least 600 civilians in Iraq and Syria over the past three years.

However, according to monitoring group Airwars, the actual number is at least 4,354.

Damascus wrote a letter to the UN, calling for the dissolution of the “illegitimate” U.S.-led coalition over its “continued and systematic massacre” of civilians.