ST. PETERSBURG -- A homeless St. Petersburg man has taken umbrage, it seems, with the Pinellas Suncoast Transit Authority.

Timothy Paul McMahon faces multiple charges, including assault and DUI, for again attacking PSTA employees and property, deputies said.

According to the Pinellas County Sheriff's Office, McMahon was drunk Monday night at a PSTA bus shelter on Scherer Drive. While the driver was outside the bus, McMahon jumped in the driver's seat of the running bus and began honking the horn repeatedly. Police said McMahon then became aggressive and started threatening the driver and another employee.

"I'm going to kick your ass and I'll beat you up," McMahon told Harry de Los Santos, according to his arrest report.

Deputies said De Los Santos was in fear for his safety as McMahon exited the bus, waving a balled fist at him.

It wasn't McMahon's first run-in with PSTA. He was trespassed from all PSTA locations in July after he was accused of damaging a bus.

McMahon is currently in Pinellas County Jail in lieu of $1,000 bail. He faces charges of simple assault, disorderly intoxication, trespassing and driving under the influence for being behind the wheel of a running vehicle while apparently intoxicated.

Contact Daniel Figueroa IV at dfigueroa@tampabay.com. Follow @danuscripts.