LOWELL -- Police are investigating an incident of gunfire that left a car parked near 1235 Middlesex St., with a bullet hole in it early Monday morning.

Officers were called to that address at 5:43 a.m., and found an empty vehicle that had been struck, but no other signs of property damage or injuries.

A witness could describe only two men in a car who were possible suspects.

Anyone with information is asked to call Lowell police at 978-937-3200 or Crimestoppers at 978-459-TIPS (8477).

Tipsters can remain anonymous, but can receive up to $1,000 for information leading to an arrest.