May 5 (UPI) -- At least two people were killed and 22 were injured, three seriously, after a car was driven into a crowd in the German city of Leipzig, 100 miles southeast of Berlin, authorities said.

A 33-year-old man, who is a German citizen, was arrested by police after the suspect's car allegedly struck people gathered late Monday afternoon in the downtown Grimmaische Strasse area and failed to stop, said Leipzig Mayor Burkhard Jung.

"We are utterly stunned by what has happened. A man has driven at high speed into the shopping area. We are currently mourning two deaths, three people with serious injuries and many others who have been injured. It is impossible to find the right words to describe this horrific rampage," said Jung.

Police said they were treating the incident as a "violent rampage" but said there was no wider threat.

"We are talking about a case of violent rampage here. We are working on the assumption that this was the act of a lone perpetrator and currently have no indications that there is still a threat to public safety," said Leipzig police spokesperson Susanne Luebcke.