A Syrian MIG-21 fighter jet was shot down in the eastern Syrian city of Deir Ezzor while on mission against ISIS militants.
Colonel pilot Ali Hamza was killed in the crash.
ISIS claimed responsibility for downing the Syrian aircraft via its official account on social media, Aamaq Agency.
According to reports, the MIG-21 was shot down by 23 mm anti-aircraft gun while pounding ISIS positions at relatively low altitude.
Yesterday, up to 80 Syrian soldiers were killed, dozens others injured in US airstrikes on Jabal al-Thurdeh, concurrently with a massive attack launched by the terror group on the same area.