An ambush on a bus in remote eastern Syria left at least 15 pro-government fighters dead, the Syrian Observatory for Human Rights said. The war monitoring group said it was not immediately clear if those killed were from the regular army or allied militia.
The attack took place on the road linking the city of Raqa, which used to be a major IS hub and is under Kurdish control, to the government-controlled city of Homs. The Observatory said several other fighters were critically wounded.
The official state-run agency SANA confirmed 13 casualties and quoted a military sources saying that the ambush took place at around 6:30 am. Observatory head Rami Abdel Rahman said the ambush was the deadliest of its kind since a similar attack in early March also killed 15 in the Palmyra region. Another 10 soldiers and allied pro-regime forces were killed in an attack last month on an army bus by non-IS rebel forces in the northern province of Aleppo. - AFP