"Voters should be able to have full confidence that the elections are being conducted correctly and legally. It is of the utmost importance that this is investigated thoroughly," he adds.
The Green Party's party secretary Katrin Wissing also takes the suspicions seriously.
"Therefore, it is extremely important that this information is investigated thoroughly and that it is clarified what has happened," she writes in a comment.
No one has yet been charged with a crime, according to the prosecutor.
