A retired police officer was killed in a car crash in Easton on Tuesday.  Police say 84-year old Kenneth Lowman of Monroe was pronounced dead at the hospital on Tuesday night.  He served 22 years as an officer with the Stamford Police Department.  Police say a Jeep was headed north on Route 59 around 5pm and crossed the center line, sideswiping a car.  The Jeep continued north in the southbound lane and hit another vehicle.  The Easton fire department extricated two passengers from their vehicles and they are being treated at the hospital for serious injuries. The investigation is ongoing to determine the cause of the accident.