WATCH: Bus driver assaulted with rocks

A brutal bus attack in Cleveland, Ohio was caught on camera, and the four teens connected to the attack are now in police custody.

RTA, Cleveland’s public transit authority, released security footage of the attack showing four boys getting on the bus. One of them swings a rock-filled sock at the driver, striking her in the face, neck and shoulders.

The attack happened at around 12:40 a.m. on Sunday.

The RTA says that this is the 18th operator assault this year, up from last year’s 7 assaults.