Over the past weekend Newtown Police responded to two separate fatal motorcycle accidents.  On Friday, shortly before 11pm, officers responded to Riverview Road on a report of a motorcycle off the roadway.  No other vehicles were involved in the accident and the motorcyclist, 24-year old Ryan Smith of Enfield, was pronounced dead at the scene.  A witness observed the crash and no charges are expected.  On Saturday, shortly after 5pm, officers responded to a car versus motorcycle accident on Sugar Street near Dodgingtown Road.  The motorcycle operator, 25-year old Harvey Lopez of New Haven, was transported to Danbury Hospital where he was later pronounced dead.  The car driver stayed on the scene and is cooperating.  Newtown Police say no charges are expected.  Both crashes remain under investigation by the Newtown Police Accident Reconstruction Team. The Department is reminding motorists to drive safe this summer.