Geneva, July 2 (RHC)-- Airstrikes in the city of al-Quriyah, in the Syrian province of Deir Ezzor, have killed 25 children, according to the United Nations Children's Fund.

The city of al-Quriyah has seen a lot of violence since Islamic State group militants captured parts of the city in January.  It is also surrounded by one of extremist organization's most valuable oilfields, which have been targeted by both U.S. and Russian airpower in recent months.

The biggest concern aid workers have is that attacks on children in Syria "are becoming commonplace with callous disregard for the lives of children," UNICEF said.

Elsewhere in the province of Deir Ezzor, five media activists have been executed by the Islamic State group. The Syrian Observatory for Human Rights, a London-based organization which monitors the war in Syria, claims to have received a copy of the video documenting the execution.

The group claims the executions were carried out based on charges of "acting against the Islamic state, communicating with outside parties and receiving funds, and other charges."