ST. PETERSBURG, Fla. (WFLA) — The Pinellas Suncoast Transit Authority and St. Petersburg Police held a press conference on an incident where a trolley driver was attacked.

Thursday, St. Petersburg police announced that Obdulio Chacon, 46, was arrested for attacking a driver while he parked in his trolley on Tuesday.

According to police, the driver was on his break and returning to his trolley when Chacon repeatedly punched him in the face. The attack was said to be totally unprovoked.

An arrest affidavit said the driver ended up falling down the stairs of the trolley, striking his head on the cement. He was hospitalized with non-life-threatening injuries.

St. Petersburg police Chief Anthony Holloway said the suspect had an extensive criminal history before his arrest.