Ranger's killer suspected in 2nd shooting SEATTLE, Jan. 2 (UPI) -- A man being sought in the killing of a Mount Rainier National Park ranger in Washington is also suspected of wounding four other people, authorities say. An intense manhunt was under way for Benjamin Colton Barnes, a 24-year-old described as having military experience and survival skills, the Seattle Post-Intelligencer reported. Sgt. Cindi West of the King County Sheriff's Department said it appeared the 10:30 a.m. Sunday shooting death of park ranger Margaret Anderson, a 34-year-old mother of two and wife of a fellow ranger, was related to a 3 a.m. shooting at a house party in Skyway that left a man and woman critically injured and two other men wounded, The Seattle Times reported. The four victims, all in their 20s, were allegedly shot by a man who returned to the party after having been asked to leave because he got into an argument. Anderson was shot at a roadblock she had set up to intercept a vehicle that had refused to pull over for a routine traffic stop. The car involved in the park shooting was registered to Barnes, who Washington State Patrol spokesman Guy Gill termed "a person of interest." Mount Rainier spokesman Kevin Bacher told the Times authorities discovered weapons, body armor and survivalist gear in the vehicle. The Post-Intelligencer said authorities believed the gunman was still in the woods with an assault rifle. The online newspaper said about 100 visitors and staff in the park were told by authorities to stay put for their safety while the park was put off-limits to other people. However, it appeared some hikers could still be on the mountain unaware of the developments. More than 100 officers from various law enforcement agencies were searching for Barnes. "We're talking about a subject that has an advantage," Gill said. He's barricaded down in the woods, armed. It puts officers at a disadvantage. It requires a lot of planning.