On Wednesday, Israel launched airstrikes in Damascus and hit government forces in the south, demanding they withdraw and saying that Israel aimed to protect Syrian Druze - part of a small but influential minority that also has members in Lebanon and Israel.
"We call upon Druze, Bedouins, and Sunnis to put down their weapons and together with other minorities build a new and united Syrian identity," Tom Barrack, the US ambassador to Turkey, said on X.
Barrack said Israel and Syria agreed to the ceasefire supported by Turkey, Jordan and neighbours.
The Israeli embassy in Washington and Syrian consulate in Canada did not immediately respond to requests for comment.
Syria's Sweida province has been engulfed by nearly a week of violence triggered by clashes between Bedouin fighters and Druze factions.
Earlier on Friday, an Israeli official said Israel agreed to allow Syrian forces limited access to the Sweida area of southern Syria for the next two days.
The Syrian presidency late on Friday said authorities would deploy a force in the south dedicated to ending the clashes, in coordination with political and security measures to restore stability and prevent the return of violence.
The US intervened to help secure the earlier truce between government forces and Druze fighters, and the White House said on Thursday that it appeared to be holding.
Syrian leader Ahmed al-Sharaa, who has worked to establish warmer ties with the US, accused Israel of trying to fracture Syria and promised to protect its Druze minority.
Reuters reporters saw a convoy of units from Syria's interior ministry stopped on a road in Daraa province, which lies directly east of Sweida. A security source told Reuters that forces were awaiting a final green light to enter Sweida.
But thousands of Bedouin fighters were still streaming into Sweida on Friday, the Reuters reporters said, prompting fears among residents that violence would continue unabated.
The Syrian Network for Human Rights said it had documented 321 deaths in fighting since Sunday, among them medical personnel, women and children. It said they included field executions by all sides.
Syria's minister for emergencies said more than 500 wounded had been treated and hundreds of families had been evacuated out of the city.
Clashes continued in the north and west of Sweida province, according to residents and Ryan Marouf, the head of local news outlet Sweida24.
Residents said they had little food and water, and that electricity had been cut to the city for several days.
The head of the UN human rights office urged Syria's interim authorities to ensure accountability for what it said are credible reports of widespread rights violations during the fighting, including summary executions and kidnappings, the office said in a statement.
At least 13 people were unlawfully killed in one recorded incident on Tuesday when affiliates of the interim authorities opened fire at a family gathering, the OHCHR said. Six men were summarily executed near their homes the same day.
The UN refugee agency on Friday urged all sides to allow humanitarian access, which it said had been curtailed by the violence. Israel's deep distrust of Syria's new Islamist-led leadership appears to be at odds with the United States, which said it did not support the recent Israeli strikes on Syria.
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