A 22-year-old male was riding a skateboard eastbound in the 1300 block of West Mission Bay Drive about 8:30 p.m. on Sept. 16. At some point, he lost control of the skateboard. While chasing his skateboard, which continued to roll, he followed the board on foot across the No. 1 and No. 2 lanes of eastbound West Mission Bay Drive. He then followed the skateboard over the center divide into the westbound No. 1 lane of West Mission Bay Drive. The male was struck after crossing in front of a vehicle to catch his board in the westbound No. 1 lane, by a 25-year-old male driving a Nissan Sentra sedan. The driver remained on scene and alcohol is not a factor in the collision. The skateboarder/pedestrian was transported to the hospital with life threatening injuries, and later died. The San Diego Police Traffic Division will be investigating the collision.