A convoy delivering aid to civilians trapped in the Syrian city of Homs has been hit and a driver wounded, as the regime and rebels accused each other of breaking a humanitarian truce.
The violence comes a day after 83 children, women and elderly people who survived more than 600 days of a choking army siege were evacuated in a UN-supervised operation.
Clashes erupted in the morning in rebel-held areas of Homs' Old City, delaying the delivery of aid.
Hours later a Syrian Red Crescent convoy came under attack.
"Shots fired targeting aid trucks and the team," the Red Crescent said on Twitter.
"Mortar shells falling in close proximity near the team and aid trucks that moved into Old City," it added, saying a driver was wounded.
There was no immediate claim of responsibility for the attack, and it was unclear if the violence will stop a hard-won deal for the United Nations to deliver aid much-needed aid to civilians in Homs.
