The US says it has killed Islamic State (IS) leader Abu Yusuf in Syria.
US Central Command (Centcom) forces said they carried out an airstrike targeting Yousif, also known as Mahmoud, in an area controlled by the Syrian regime and Russian forces before the fall of Bashar al-Assad.
Another IS operative was also killed in the attack, according to US officials.
Centcom commander General Michael Erik Kurilla said: "As previously stated, the United States, working with allies and partners in the region, will not allow ISIS to take advantage of the current situation in Syria and regroup."
"IS aims to remove from custody the over 8,000 ISIS operatives currently held in facilities in Syria. We will aggressively target these leaders and operatives, including those attempting to conduct operations outside of Syria," he said.
ISIS militants overran parts of Iraq and Syria in 2014, taking advantage of the latter's civil war to claim land before declaring a caliphate in late 2015.
At the height of the group's power, an estimated 12 million people lived under ISIS rule, as the militants enforced an extremist interpretation of Islamic law and carried out mass killings of minority groups.
However, they were pushed back by a coalition of forces, losing control of all their territory in the Middle East in 2019.
They have continued insurgency efforts in parts of Syria, Iraq and Afghanistan, while their branches still have a presence in parts of Africa.