BERLIN (AP) — German police say they have detained a suspect in connection with a Thursday morning attack at a high school in the northern city of Bremerhaven in which one person was injured.

Police said the incident happened at the Lloyd high school in the center of the city.

A police spokesperson initially confirmed that there had been a shooting, but later revised her information to say only that the attacker was armed. She declined to confirm that the weapon used was a crossbow.

“The armed person was detained and is in police custody,” police said in a statement

The wounded person was taken to a hospital and was not a student, police said, adding that the investigation into the incident was ongoing.