In order for a vocational student in Hamm to avoid an exam date, a 16-year-old is said to have threatened with a bomb at the local St. Franziskus vocational college.
According to police investigations, he followed a call from the 21-year-old on social media.
The student is said to have asked for a threatening phone call in order to be able to avoid a follow-up exam, the police said.
A police spokesman suspects that the 16-year-old is "showing off" behind the action.
The youngster later went to the police himself and, according to investigators, admitted the threatening phone call.
The 16-year-old and the 21-year-old are now being investigated for disturbing the public peace by threatening to commit a criminal offense.
In addition, it will be checked whether the two have to pay damages for the deployment that has been triggered.
The threatening phone call triggered an extensive police operation in mid-November.
However, no explosives were found during the search of the school.
On Friday morning, a telephone bomb threat was also received at the Cooperative State University in Mannheim.
The area around the university has been cordoned off, the police said.
Two explosives detection dogs were in use.
"You always have to take something like that seriously," said a police spokesman.
During the search of a total of five buildings at the university, nothing suspicious was found, it was said at noon.
In this case, too, a preliminary investigation was initiated.
The threatening caller is said to have been a young woman.
him / dpa