Arnold Schwarzenegger Actor's son, Patrick investigated by the police?

Last Week, Patrick Schwarzenegger was heading to meet girlfriend, Miley Cyrus at an L.A restuarant, when a strange guy shut a bottle full of water at his car whip! Police say he chased and got his car bumped into another.
 

The Los Angeles Police Department (LAPD) has launched an investigation into a case which involves Patrick Schwarzenegger, son to 'Terminator' star Arnold Schwarzenegger,and boyfriend to Miley Cyrus.

 

Apparently, the male model got involved in a car chase which ended with 2 cars colliding last week.

Law Enforcement sources reveal that Patrick was driving in the San Fernando Valley last week when a mystery guy drove up on him and threw a bottle full of water on his whip and then ran away.   

Patrick got pissed and started chasing the guy, who at some point banged a u-turn and ended up ramming Patrick's car, according to TMZ.

Patrick survived the car bump while the other guy vanished into thin air. He also reportedly called the cops by himself after meeting girlfriend, Miley at a nearby restaurant.

Police say they will fish out  the mystery dud out in no time.