Gates N.Y.- Monroe County Sheriff's deputies continue to investigate a possible shooting on 390 Thursday morning.

Investigators say a tractor trailer may have been struck by a bullet.

The driver was heading south on 390 around 10:00 a.m. when he heard a noise and then saw a hole in the rear window of his rig. The driver pulled over and called 911.

This all happened on 390 at the railroad overpass between the Buffalo Road overpass and the Chili Avenue exit.

It was just last Wednesday, police closed portions of the expressway for several hours after they received a report of a vehicle struck by a bullet last Monday evening during rush hour traffic. That investigation turned up nothing.