The decision to send the brigades came after Iraqi border guard forces were involved in a gunfire incident this past Tuesday.

:: Iraqi Popular Mobilization Forces deployed 13 brigades to the Syrian border to support Iraqi border guard forces who were recently involved in a gunfire incident this past Tuesday, a military official said.

The gunfire attack came from within Syria. However, the group that was involved is still unknown. Popular Mobilization Forces expect ISIS to be responsible for the attack, who may be starting guerrilla warfare after losing its urban strongholds earlier this year.

In a statement to the commander of the western Anbar axis, Qasim Musleh, the military official said, “after several Iraqi border checkpoints were attacked causing many guards to be injured by guided missiles and delayed support from the security forces, 13 Popular Mobilization brigades were sent and have started to target the sources of the rockets.”