A UN aid convoy was heading to a besieged area in Syria on Thursday, as relief deliveries restarted after humanitarian trucks and a warehouse were hit in deadly attacks. 

"Today, we are sending an inter-agency, cross-line convoy with urgently needed aid to people in a besieged area of Rural Damascus. We have resumed aid deliveries based on the humanitarian imperative," UN humanitarian agency spokesman Jens Laerke said in a statement. 

The UN had suspended deliveries following the Monday attack on a humanitarian convoy that killed around 20 people, including a Red Cross staffer.