A 49-year-old man is in a Tucson hospital with serious injuries after a stabbing Tuesday afternoon, and authorities are searching for the suspect who fled the scene.Deputies from the Cochise County Sheriff's Office responded to a reported stabbing in the 4400 block of East Camino Principal, just south of Sierra Vista, at about 3:19 p.m.Upon arrival, deputies and medical personnel found the victim, who lives at the home, suffering from apparent s…