The Green Bay Police Department is investigating reports of vandalism at Martin Elementary School in Green Bay.
Police say they responded to the school on 626 Pinehurst Drive at 7:44 Saturday night.
Several broken windows were spotted, and a police dog was called to do a building search.
Police suspect someone got inside the school, but did not see anyone or make any arrests.
They are also unsure if anything was taken.
Police estimate the damage is between $3 to $4,000.
