The ISIS militant group said on Monday it killed five Kurdish fighters in an attack in eastern Syria's Deir Ezzor, according to the group's news agency.
The spokesperson for Syria's Kurdish-led Syrian Democratic Forces Farhad Shami confirmed to Reuters that five members were killed in the attack which he described as "one of deadliest" against the group in a while.
Deir Ezzor city was captured by the ISIS group in 2014, but the Syrian army retook it in 2017.
Former ISIS leader Abu Bakr al-Baghdadi declared a so-called “caliphate” over a quarter of Syria and Iraq in 2014 before he was killed in a raid by US special forces in northwest Syria in 2019 as the group collapsed.
It has been recently trying to stage a comeback in the Middle East, the West and Asia.