SOLINGEN, Germany, Aug 25, (AP): German police said early Sunday that a 26-year-old man turned himself in, claiming to be behind the deadly Solingen knife attack that left three dead and eight wounded at a festival marking the city’s 650th anniversary. Düsseldorf police said in a joint statement with the prosecutor’s office that the man "stated that he was responsible for the attack,” adding he had been arrested before, but didn't provide details. "This person’s involvement in the crime is currently being intensively investigated," the statement said.

On Saturday the Islamic State militant group claimed responsibility for the attack, without providing evidence. Officials had earlier said a 15-year-old boy was arrested on suspicion he knew about the planned attack and failed to inform authorities, but that he was not the attacker. Two female witnesses told police they overheard the boy and an unknown person before the attack speaking about intentions that corresponded to the bloodshed, officials said.

People alerted police shortly after 9:30 pm local time Friday that a man had assaulted several people with a knife on the city’s central square, the Fronhof. The three people killed were two men aged 67 and 56 and a 56-year-old woman, authorities said. Police said the attacker appeared to have deliberately aimed for his victims’ throats.

Solingen, a city of about 160,000 residents near the bigger cities of Cologne and Düsseldorf, was holding a "Festival of Diversity” to celebrate its anniversary. It began Friday and was supposed to run through Sunday, with several stages in central streets offering attractions such as live music, cabaret and acrobatics. The attack took place in front of one stage. The festival was canceled as police looked for clues in the cordoned-off square.

The IS militant group declared its caliphate in large parts of Iraq and Syria about a decade ago, but now holds no control over any land and has lost many prominent leaders. The group is mostly out of global news headlines. Still, it continues to recruit members and claim responsibility for deadly attacks around the world, including lethal operations in Iran and Russia earlier this year that killed dozens of people.