State and Saco Police are investigating the stabbing of a local man inside his apartment.Authorities say a 911 call was received around 12:30 Friday morning, saying 50-year-old Dale Berube needed an ambulance.They say Berube was found in his bathtub with multiple stab wounds.He was taken to Maine Medical Center in Portland and underwent emergency surgery.The call was made by Berube’s roommate, 48-year-old Pamela Young, who was interviewed and released.The incident remains under investigation.