BEIRUT, Lebanon — The jihadists of the Islamic State launched a series of coordinated attacks in southern Syria on Wednesday, shattering the quiet that had reigned in the area and killing more than 200 people, according to local officials and a war monitor.

The attacks, which included suicide bombings at a vegetable market and a public square in a provincial capital, along with raids on nearby villages, showed that the Islamic State could still inflict tremendous damage in Syria, despite having lost most of the territory it once controlled.

The high death toll undermines the Syrian government’s narrative that the seven-year war is heading toward its conclusion, with President Bashar al-Assad working to restore stability. The dead included many pro-government fighters, a conflict monitor said.

The attacks hit Sweida Province, along Syria’s border with Jordan. Most of the area’s residents are members of the Druse sect, and the area has largely been spared the violence that has torn apart other areas of Syria during the war.