Investigators are treating the attack on children as attempted murder. The 21-year-old suspect will be brought before a judge this Thursday on charges of attempted murder, the police and public prosecutor announced on Wednesday evening.

The two seriously injured children are nine and ten years old. The investigation into the background to the crime is ongoing. The suspect is being held in custody in Duisburg, Germany, pending a court appearance on attempted murder charges on Thursday. The children are aged nine and 10, and are from a local school.