TACONY - July 8, 2012 (WPVI) -- Police tell Action News that a driver going the wrong way, struck and killed an off-duty Philadelphia officer on a motorcyle in Tacony.
It happened around 3:30 Sunday morning on the northbound side of I-95 near Cottman Avenue.
Authorities say the officer - 48-year-old Brian Lorenzo - was on a motorcycle on his way home from a police detail.
The officer was travelling northbound when a driver going southbound on the same road struck the officer's bike.
The striking driver has not been charged but police are trying to determine if he was under the influence. He remains in the custody of Pennsylvania State Police.
Lorenzo was a 23 year veteran of the police force and known by many - making this a tough day for his fellow officers.
"It's just tragic. This particular officer was well known to many - the commissioner, myself and everyone standing behind me. It makes it even tougher when you put that name to the face ," said Deputy Commissioner Richard Ross.
Officer Lorenzo leaves behind a wife and three children.
Stay with Action News and 6abc.com for more information as this story develops.
The off-duty officer was taking part in a motorcycle ride for peace with about 100 other members of the Midnight Run for Peace and Men United for a Better Philadelphia.
The group's aim is trying to stop the violence and drugs in the city.
"The off-duty officer was on his motorcycle going southbound on Broad Street at Master. A car made a left hand turn westbound on Master and the officer on his motorcycle struck that vehicle," Lt. Ray Evers said the night of the accident.