Syria's Assad is now in Moscow, Russian state media says

The Syrian Civil Defence, known as the White Helmets, said on Sunday that it sent “five specialized emergency teams” to Sednaya prison “to search for secret cellars inside the prison where detainees are expected to be present,” in a post on X.

"The teams include a search and rescue team, a team to dig through walls, a team to open iron doors, a team of trained dogs, and an ambulance team," the post said.

Sednaya prison, operated by ousted president Bashar al-Assad’s government, is known colloquially as the “human slaughterhouse.” It is located near Damascus.

-ABC News' Ellie Kaufman

Iranian Foreign Minister Abbas Araghchi commented on the fall of Syria's government during an interview on Iranian state TV on Sunday.

He said Syria's ousted president, Bashar al-Assad, was “surprised” and “complained about the way his own army was performing.”

Araghchi also said Iran was fully aware of the situation in Syria through “the intelligence and security system of our country.”

Iran is monitoring the developments in Syria and is concerned about the “possibility of a renewed civil war or a sectarian war between different sects or the division of Syria and the collapse of Syria and its transformation into a haven for terrorists,” Araghchi said.

-ABC News' Hami Hamedi and Ellie Kaufman

The United States launched dozens of against ISIS targets in central Syria on Sunday in an attempt to "disrupt, degrade and defeat" the terrorist group, according to the head of the U.S. Central Command.

CENTCOM Commander Gen. Michael Erik Kurilla said in a statement that 75 ISIS targets were hit in precision airstrikes Sunday in Syria. He said the mission was carried out by U.S. Air Force assets, including B-52s, F-15s and A-10s.

"There should be no doubt -- we will not allow ISIS to reconstitute and take advantage of the current situation in Syria. All organizations in Syria should know that we will hold them accountable if they partner with or support ISIS in any way," Kurilla said.

Kurilla said the strikes hit known ISIS camps and operatives in central Syria.

During a speech at the White House on Sunday, President Joe Biden mentioned the U.S. strikes on ISIS targets in Syria. He said U.S. forces are also bolstering security at detention facilities in Syria where ISIS fighters are being held.

"We're clear-eyed about the fact that ISIS will try to take advantage of any vacuum to reestablish its capability and to create a safe haven," Biden said. "We will not let that happen."

-ABC News' Cindy Smith

Airstrikes have hit numerous government and military facilities in Damascus in the last few hours, after IDF officials earlier in the morning had claimed similar strikes. The IDF is not commenting on these most recent strikes.

Earlier Sunday, IDF issued warnings to residents of five Syrian villages along the border with Israel, saying it is taking control of the buffer zone between the two countries.

During a visit on Sunday to a Syria observation post in the Golan Heights, Israeli Prime Minister Benjamin Netanyahu said the IDF seized the buffer zone due to Syrian troops abandoning their positions there. "We will not allow any hostile force to establish itself on our border," Netanyahu said.