Perugia, September 25 - A suspected was arrested on Monday after two judges were stabbed in Perugia, sources said. The victims were not seriously injured, the sources said. Judge Francesca Altrui was stabbed in her office, and her colleague Umberto Rana was stabbed when he came to her defence. A clerk, who was not named, was also slightly hurt by the knife-wielding assailant. The attacker was said to be a 50-year-old man, who was also slightly hurt in the attack. He was reported to have used a large knife. The reason for the attack is as yet unknown.