Syria's presidency announced on Friday that it would extend a probe into the killings of Alawite civilians in coastal areas that left hundreds dead after clashes between government forces and armed groups loyal to former President Bashar Assad spiraled into sectarian revenge attacks.

The violence erupted on March 6 after Assad loyalists ambushed patrols of the new government, prompting Islamist-led groups to launch coordinated assaults on Latakia, Baniyas, and other coastal areas.