http://www.cnn.com/2007/US/03/29/homeless.attack/index.html?eref=rss_topstories CNN) -- Egged on by a 17-year-old, two 10-year-old boys joined in the attack of a Florida homeless man, leaving him bruised and bloody, police said. The incident highlights an upswing in violent crime across the U.S. against the homeless. Tuesday's incident, which took place in Daytona Beach, Florida, may make history, said the nonprofit's acting executive director Michael Stoops. "If we're talking about 10-year-olds, that means we've hit an all-time low," said Stoops. "The youngest person to have ever been arrested for a crime like this is 13." (Read CNN's exclusive story about homeless 'sport killings') Daytona Police Sgt. Billy Walden said the teen and two boys were walking in their neighborhood around 9 p.m. when they saw 58-year-old John D'Amico. They began throwing rocks at the homeless man. The 17-year-old, Jeremy Woods, punched D'Amico who then fell over a concrete wall. As he lay on the ground, one of the 10-year-olds -- whose names are not being released -- used parts of the concrete to bash D'Amico in the head, a police report shows. (Watch cuffed 10-year-olds in court ) I just want to know, where are the parents??? No 10 yr old of mine is going to be walking the neighborhood at 9 p.m.