A motorcyclist was killed Friday after slamming into the side of another vehicle.

 

Calgary police say the bike hit the vehicle's door just before 6 p.m. in near Memorial Drive and 59 Street.

 

"The driver's helmet was not securely attached and came off at the point of collision," a police release said.

 

The 22-year-old male driver of the motorcycle died at the hospital. A woman in the vehicle was treated for minor injuries.

 

Police believe excessive speed may have been a factor in the motorcycle crash.