With the help of a steel girder leaning against the wall, a stranger entered a school in Siegburg through the toilet skylight.
The caretaker found on Thursday morning that cupboards in the school building had been broken into and ransacked.
On Friday, the police could not say whether something was stolen.
Siegburg - The burglar probably got a steel profile from a construction site nearby and leaned it against the wall as a climbing aid, it said.
Then he climbed into the building during the night through a toilet skylight that was obviously “on top”.
A worker at the neighboring construction site stated that the windshield wipers on a wheel loader had been deliberately bent.
The police suspect that the same perpetrators were at work.
The police are investigating suspected break-ins and property damage and are looking for witnesses.
dpa