A 25-year-old motorcyclist was killed in an accident in the Mission district Tuesday, police said.

Drew Rosenberg, 25, of San Francisco, was pronounced dead about a half-hour after his motorcycle collided with a vehicle at 16th and Harrison streets around 5:30 p.m., police said.

Investigators are trying to uncover what caused the accident, police said.

maldax@sfexaminer.com