Insurgents have shelled the central prison near the Syrian capital Damascus, killing at least 10 and wounding more than 40, the interior ministry said.
The ministry's statement carried by state TV did not say if the dead and wounded included prisoners from the jail known as Adra Prison, just north east of Damascus. The statement did not say which specific group was responsible for the attack.
Insurgents have shelled Damascus on several occasions over the past few weeks, killing and wounding dozens of people.
Sunday's shelling of Adra Prison and nearby areas came a day after government air strikes on a Damascus suburb killed more than 20 people and wounded dozens in the latest wave of government attacks on the crowded rebel-held area.