Sanilac County authorities are investigating a weekend crash in which alcohol is believed to be a factor. A 59 year old Croswell man was hospitalized Sunday after two SUV’s were involved in a rear-end crash on eastbound Peck Road in Lexington Township. Authorities say a 33 year old Lexington man driving an SUV rear ended another SUV driven by a 55 year old from Croswell and injuring his 59 year old passenger. The passenger was taken to a Port Huron area hospital for treatment. The Sanilac County Sheriff’s Office say they are investigating the cause of the crash in which excessive speed and alcohol appear to be factors.