Dr Talat Amer, a surgeon at Sweida National Hospital in southern Syria, worked tirelessly for three days as bombs fell and the building came under siege from government and militia forces.

Syria's armed Bedouin clans on Sunday announced that they had withdrawn from the Druze-majority city of Sweida following over a week of clashes and a U.S.-brokered ceasefire, as humanitarian aid convoys started to enter the battered southern city.

DAMASCUS, Syria — Renewed clashes broke out overnight between Druze armed groups and members of Bedouin clans in southern Syria, and government forces were preparing to deploy again to the area Friday after pulling out under a ceasefire agreement that halted several days of violence earlier this week, officials said.

Syrian government forces had largely pulled out of the Druze-majority southern province of Sweida after days of clashes with militias linked to the Druze religious minority that threatened to unravel the country’s fragile post-war transition.

The Druze religious sect, enmeshed in an outbreak of tit-for-tat violence in Syria, began roughly 1,000 years ago as an offshoot of Ismailism, a branch of Shiite Islam.

Clashes that shook southern Syria this week have killed hundreds of people, including civilians, and drawn in an array of both local and international players, harking back to the dynamics of the country’s nearly 14-year civil war.

Sky News special correspondent Alex Crawford is in Sweida in Syria, where she has witnessed mutilated, burned and decomposing bodies after a week of fierce fighting in the region.

The clashes between militias of the Druze religious minority and Sunni Muslim groups killed hundreds and threatened to unravel Syria's fragile postwar transition.

DAMASCUS (Reuters) -Residents reported calm in the Syrian city of Sweida on Sunday after the Islamist-led government declared that Bedouin fighters had withdrawn from the predominantly Druze city and the United States stepped up calls for an end to fighting.