Kittery police are investigating what caused a fatal motorcycle accident Saturday morning. The crash happened at around 11:25 am on Brave Boat Harbor Road in Maine.Christopher Flayhan, 53, of Somersworth, N.H., died from his injuries after his 2009 Harley Davidson motorcycle collided with a 1997 Ford. That vehicle was being driven by 60-year-old Tim Pickett of Elliot, Maine.Kittery police are still investigating the crash, but no further information is available at this time. The York Police Department and Maine State Police are assisting with the investigation.