An activist group said government warplanes bombed a high school in northern Syria Sunday, killing at least 12 people, most of them students.
The Britain-based Syrian Observatory for Human Rights said the regime airstrike took place Sunday in the city of Raqqa, which is the only Syrian provincial capital under rebel control.
At least 30 were seriously wounded, according to the Media Center for the Rebels Raqqa.
The Observatory said the death toll is likely to rise because many of the wounded have serious injuries.
The city was wrested from government control in March, and is dominated by the Al-Qaeda group Islamic State of Iraq and the Levant.
President Bashar Assad’s regime has relied heavily on its air force to strike rebel-held areas in the country’s 2 ½ year-old conflict.
A grisly video purportedly shot in the aftermath of the attack was uploaded to YouTube by the MCRR.