Calling it an ambush attack on a man riding an electric bike in Rancho Cordova, the Sacramento County Sheriff's Office announced the arrest of James Hall, 42. They said deputies with the gang suppression unit picked up Hall without incident at Shasta Community Park in South Sacramento. They said he used public transportation to get there after leaving Ahlstrom Park in Rancho Cordova, where he usually stays. Hall is homeless. Neighbors in the quiet area said they are relieved now that a suspect is in jail.