Authorities from Milwaukee, Wisconsin are looking for a man who was caught on tape beating a bus driver and trying to commandeer the vehicle. They released the surveillance video on Thursday.

As the video showed, a man in a red sweatshirt and bandanna got on the bus and started yelling at the driver. He began to punch the driver while he was also trying to take him out of his seat. In all this time the bus was still moving.

According to KARE 11, a representative of the bus drivers union said operators have to face a lot, but this attack was “one of the most severe assaults” they had ever seen.

There were eight or nine people on the bus and they were watching the whole thing.

The man couldn’t get off the bus and grabbed the steering wheel, taking over the bus. He accelerated, passed through an intersection and slammed the bus right into a tree.

Once stopped, the bus doors opened and the suspect managed to run away.

Passengers weren’t seriously hurt but the driver was pretty shaken up.

The police are now searching for the attacker and this was the reason that they released the video. They are sure someone will recognize the man and denounce him.

Sheriff David Clarke said that the bus driver handled the situation very well.