People on Quincy's west side say gunshots woke them up overnight Monday.
But Quincy police can't find any evidence that a shooting took place.
Just after one a.m. Monday morning, 911 operators received reports of a possible shooting at 6th and Cedar.
Officers responded but could locate no victims or physical evidence of a shooting.
Witnesses reported hearing what they thought were gun shots, but no one reported seeing anyone shooting a gun.