Bloodshed in Sweida left at least 321 people dead, the Syrian Network for Human Rights said on Friday, in a new toll.

Armed tribes supported by Syria's Islamist-led government clashed with Druze fighters outside Sweida Friday a day after government troops withdrew from the Druze-majority city, the warring parties and a monitoring group said.

The head of the United Nations human rights office called on Friday for Syria's interim authorities to ensure accountability and justice for killings and rights violations in the southern city of Sweida.

Israel's statement on Friday came just days after sectarian violence and Israeli airstrikes in Syria left hundreds dead.

The United Nations refugee agency expressed concern on Friday about the impact of hostilities in Syria's southern city of Sweida on its aid operations, and urged all sides to allow more humanitarian access.

Despite reports indicating the strike was carried out by Israel, Channel 12 reported that the Israeli military had not conducted the strikes. Israel carried out an airstrike in the vicinity of Syria's Sweida,

In Syria's Druze-majority city of Sweida, residents said they have been living in terror since the arrival of government forces who have been carrying out what witnesses and a war monitor have called summary executions.