The incident is said to have occurred outside the regional court where a high-profile murder trial is underway regarding a professional boxer who was murdered last year.
Both the police and the rescue service confirm that they are on site with multiple resources. The police are urging in a post on X residents to avoid the area.
There are still no confirmed reports of injuries or fatalities.
Eye witnesses say that the police officers outside the courtroom suddenly screamed:
"Someone is shooting outside".
Bielefeld is located in northwestern Germany.
