You better lock your car doors and use your garages if you have them, after at least two cars' GPS systems were stolen during Tuesday night on Mt. Vernon Street.

Around 1:27 a.m. on Wednesday, District E-5 Police spoke to a witness who said he saw a male with no shirt and tan shorts walking by 95 Mt. Vernon looking suspicious. The witness said he then saw a different male wearing a white T-shirt and blue jean shorts with something in his hand.

The witness asked the man where he was coming from, and the suspect dropped a GPS and hopped into the backseat of a gray sedan with two people in the front seat, according to a Boston Police report.

A check of the GPS unit gave the home address of 61 Mt. Vernon St. The owner of the GPS said she hadn't heard anything, and believed her car had been unlocked.

Also, on Wednesday morning, a resident reported to police that his car parked at 47 Mt. Vernon Street during Tuesday night, had been broken into, and the locked center console and locked glove box were broken into, and a Garmin GPS device was stolen.