MILWAUKEE - The Milwaukee County Sheriff's Department needs your help to find the man accused of attacking a bus driver during his route. The attack happened Wednesday near 60th and Silver Spring. Surveillance video from inside the Route 76 bus shows a man wearing a red shirt jump onto the bus and start violently punching the bus driver while the bus was in motion. You can see the bus driver fighting the suspect off with one arm while trying to keep control of the bus. According to the Milwaukee County Sheriff, at one point, the suspect tried to commandeer the bus. "The suspect literally grabbed onto the steering wheel and used his foot to push down on the accelerator," said Milwaukee County Sheriff David Clarke. "I want this guy in custody. This is one of the most aggravated situations that I've ever seen." Click on the link under related content to see Sheriff Clarke talk about the bus attack. The bus driver slammed into a small tree and the suspect ran off. There were eight passengers on board the bus. On the surveillance tape, you can hear the passengers yelling throughout the wild ride. Sheriff Clarke is asking for the public's help in identifying the suspect. He hopes someone will turn the guy in. Union leaders say the driver is not seriously hurt, but is shaken up. "Emotionally, he's very, very upset as well as being bruised up," said union president Richard Riley, "It's a situation I don't think anyone expects to face when they go to work every day."