Marblehead man admits he was a hot head who head butted a bus driver; now he heads to jail

A Marblehead man admitted today he head butted an MBTA bus driver at Wonderland last July, the Suffolk County District Attorney's office reports.

John Kerivan, 48, headed into court asking for a suspended sentence in exchange for pleading guilty to assault and battery on a public employee. Assistant District Attorney Thomas Ozbolt, who headed up the prosecution, asked for 18 months. Chelsea District Court Judge Benjamin Barnes headed off further discussion and gave him three months in jail.

According to the DA's office, Kerivan boarded a T bus at Wonderland station around 10 p.m. on July 23 - and promptly began screaming at the driver:

When the bus driver tried to calm him, the evidence would have shown, Kerivan head-butted him, knocking the driver off balance and disorienting him.

MBTA Transit Police found Kerivan in the station a short time later and took him into custody. The driver was released from duty for the day and received treatment at Massachusetts General Hospital.