One person has died and at least four others injured - some seriously - in a stabbing in a supermarket near Milan, northern Italy, reports in local media say.
They say a 30-year-old cashier of the Carrefour supermarket died after a man started attacking people in Assago.
Among the injured was Pablo Mari, a football player on loan from Arsenal.
A 46-year-old suspect has been detained. Police have ruled out any terrorist motive.
The attacker has had mental health problems, the reports say.
They say he started stabbing people at random at about 18:30 local time (16:30 GMT) at a Carrefour in a local shopping centre.
Screams were reportedly heard inside the centre, as terrified visitors tried to flee in panic.
The attacker is reported to have been detained by several customers and handed over to police who arrived at the scene.
Mari, a 29-year-old Spanish defender, is said to have suffered a stab wound to the back - but his injuries are not life-threatening. He is now recovering in hospital.
He joined Arsenal from Brazilian side Flamengo in January 2020. He has only played 19 times for the Gunners and is currently on loan with top flight Italian club Monza.
Arsenal manager Mikel Arteta said: "I just found out. I know Edu [Arsenal technical director] has been in touch with his relatives. He's in hospital but he seems to be okay."
In a tweet, Monza CEO Adriano Galliani said: "Dear Pablo, we are all here close to you and your family, we love you, keep fighting as you know how to do, you are a warrior and you will get well soon."