ISIS claimed responsibility Friday for attacks that killed dozens of pro-government forces and soldiers in the Syrian desert this week, in one of the deadliest such assaults this year.
ISIS militants "attacked two barracks of the Syrian army and the National Defense Forces, with medium and light weapons," the group said in a statement on the militants' Amaq news agency.
The Syrian Observatory for Human Rights war monitor had previously said the attacks killed at least 34 pro-government fighters and soldiers, AFP reported.
The militants launched "simultaneous attacks" at dawn on checkpoints and military positions between Raqa, Homs and Deir Ezzor, said the Britain-based group, which relies on a network of sources on the ground.
ISIS proclaimed a "caliphate" in June 2014 across swathes of Syria and Iraq and launched a reign of terror.
It was defeated territorially in Syria in 2019 but its remnants continue to carry out deadly hit-and-run attacks and ambushes, particularly from desert hideouts, targeting both pro-government forces and Kurdish-led fighters.
ISIS was blamed for a string of deadly attacks on government loyalists earlier this year.