Several people have been injured in a knife attack on a train in southern Germany, police said on Saturday.

A male suspect has been arrested, and there is no threat to public safety, Bavarian police said on Twitter.

The Bild newspaper reported that the attacker was a 27-year-old man with suffering from mental illness, with the attack appearing to be non-terror-related.

Among the three people stabbed on the train, two were seriously injured, according to local reports.

The high-speed train was traveling between the Bavarian cities of Regensburg and Nuremberg./aa