The Porter County Sheriff’s Police is investigating the burglary of Liberty Middle School at 50W 900N.

According to police, sometime between 5 p.m. Friday and 3 p.m. Sunday someone gained access to the school from the roof door, which was found off its hinges and ajar. That door leads to a stairwell and the auditorium, from which point all classrooms in the school can be accessed, police said.

Stolen were a HP laptop and a laptop docking station, three video projectors, two Elmo digital cameras, and a set of speakers, police said, with a total estimated value of $5,500.

Police did say that various roofing trucks with ladders and a mechanical lift were parked at the scene but those vehicles were found to be secured, away from the building, and not accessible by the general public.

Late last month, Liberty Intermediate School was similarly burglarized, after suspects accessed the school via a roof door. Stolen in that incident were iPads and iBooks, removed from forcibly entered Power Sync cabinets. Damage was estimated at $5,100.