Shooter Ambushes, Kills Pennsylvania State Trooper Another trooper injured; man is being questioned By John Johnson, Newser Staff Posted Sep 13, 2014 6:50 AM CDT Updated Sep 13, 2014 9:54 AM CDT 109 comments Comments State police commissioner Frank Noonan addresses the media on Saturday in Blooming Grove, Pa. (AP Photo/Scranton Times & Tribune, Butch Comegys) (Newser) – A Pennsylvania state trooper was killed and another wounded in ambush attack outside their barracks last night, authorities say. A "person of interest" is being questioned, but no charges have been filed against the man, reports the Times-Tribune of Scranton. The troopers were shot outside their barracks in Blooming Grove shortly before 11pm during a shift change, reports AP. One trooper was heading into work and another was leaving. Neither has been identified. The wounded trooper is in stable condition after surgery. The barracks is in a wooded area, and a massive air and ground search was launched immediately afterward. "This has been an emotional night for all of us," said state police commissioner Frank Noonan. He did not speculate about a motive but said the attack appeared to be "directed particularly at the Pennsylvania state police," reports CNN. Noonan said he did not think the public was in danger, but added, "We can't say that the situation is completely in hand."