According to initial information, there was a knife attack at the Hamm-Lippstadt University of Applied Sciences. Several people were injured.

According to initial information, a perpetrator injured four people with a knife in a building at the Hamm-Lippstadt University of Applied Sciences. The alleged perpetrator was arrested, said a police spokesman on Friday.

“The perpetrator is safe,” the police wrote on Friday on the short message service Twitter. Radio Lippewelle Hamm reported, citing the police, that the perpetrator had been brought under control. “We are on site with strong police forces and ask you to avoid this area,” the police tweeted. The background was initially unclear. One victim’s injuries were so serious that he was flown to a hospital by helicopter, said a police spokesman.

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This article has been updated.