One person is in custody, and police are searching for four others after a man was stabbed to death in Peterborough early Sunday morning.Investigators say a man and another person were walking in the area of Monaghan Road and Cameron Street when a confrontation ensued between them and five youths around 2 a.m. in a parking lot.Police say that during the confrontation, a man was stabbed before the youths fled the scene. The 25-year-old was taken to a nearby hospital, where he was pronounced dead.Police, with the assistance of K9 and an OPP helicopter, conducted a search of the area for the suspects.One person is in custody, and investigators say they are searching for four other males, all believed to be under the age of 18.