After the knife attack on a four-year-old girl in a supermarket in Baden-Württemberg, the background to the crime remains unclear.

The discounter in Wangen im Allgäu (Ravensburg district) was open to customers again as usual in the morning, said a dpa photographer on site. There were no traces left in the supermarket that were reminiscent of the crime on Wednesday afternoon. The police announced further information on the case this morning.

According to current findings, a 34-year-old man is suspected of having attacked the girl with a knife and seriously injured her, the police said on Wednesday. The suspect allowed himself to be arrested without resistance.

According to the police, a witness in the supermarket noticed what was happening, took the knife from the attacker and called the officers. The child was taken to a clinic and operated on there, the police announced that night.