Two people were seriously injured when their small plane crashed at a Port Townsend golf course Monday afternoon. East Jefferson Fire officials first tweeted at 1:35 p.m. that a small plane crashed at the Discovery Bay Golf Course in the 7400 block of Cape George Road. A witness told authorities that the Cessna-type plane stuttered and appeared to lose power before crashing into heavy brush just north of the 17th hole tee box. Fire officials said two people, a male and a female, were injured in the crash and trapped in the wreckage. Both were extricated from the plane, and transported to Harborview Medical Center in Seattle. Firefighters cleared the scene about an hour later. Deputies are investigating.