JUNEAU, Alaska—Poor weather conditions were hindering efforts to recover the bodies of six people who were killed when a sightseeing plane crashed in southeast Alaska, Alaska State Troopers said Friday. The plane crashed Thursday as the pilot was returning five passengers to Ketchikan from Misty Fjords National Monument, the Federal Aviation Administration said. The plane’s emergency beacon was activated about 11:20 a.m. when it crashed near the monument, the U.S. Coast Guard said. A helicopter company reported seeing wreckage on a ridgeline in the search area, and Coast Guard crew members found the wreckage around 2:40 p.m. A Coast Guard helicopter lowered two rescue swimmers to the site, and they reported no survivors, the agency said. The victims have not been identified, and troopers were working with volunteers from the Ketchikan Volunteer Rescue Squad to coordinate recovery efforts. “Poor weather conditions and deteriorating visibility in the Ketchikan and Misty Fjords …