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Cleveland police arrest 4 in bus driver attack

Image from surveillance video inside a Cleveland bus shows a person exiting who authorities say is carrying a sock filled with rocks that he had just used to assault the driver, Sunday, Nov. 30, 2014

CBS affiliate WOIO

CLEVELAND, Ohio -- Police have arrested four teens in connection with a bizarre attack on a Cleveland bus driver, reports CBS affiliate WOIO.

Surveillance video from inside the bus captured the incident just after midnight on Sunday Nov. 30.

Just after two passengers are seen boarding and paying their fare, another teen walks up to the bus, swinging a sock apparently filled with rocks, hitting the driver three times before fleeing.

Transit Police say a total of four juveniles, two 17-year-olds and two 14-year-olds, were arrested Monday on aggravated assault charges.

The driver, a 51-year-old woman, was taken to St. Vincent Charity Hospital, where she was treated and released and able to return to work.

Transit Police Chief John Joyce said he's concerned with driver safety. The incident was the city's 18th attack on a bus operator this year.

"What is the greatest concern to me is the randomness and the viciousness and it makes no sense at all," Joyce said.