February 1, 2015 - ALASKA, UNITED STATES - At least two people are injured in a collision involving two planes, about seven miles off of Knik Goose Bay Road in Mat-Su Valley, officials say.
One person is on the way to the hospital and another is still in the process of being removed from the wreckage according to Deputy Micheal Keenan of Central Emergency Services.
Ian Gregor, spokesperson for Federal Aviation Administration told Channel 2 News that a "single-engine Piper PA18" was one of the planes involved in the collision. The circumstances behind the collision are unknown.
Todd Clark, a resident in the area, told Channel 2 News that he saw the planes collide and went out to help.
Alaska State Troopers received reports of the plane collision at around 1:05 p.m. on Saturday afternoon, AST spokesperson Megan Peters wrote in an email.
WATCH: Alaska Wildlife Trooper plane involved in mid-air collision in Mat-Su Valley.
The National Transportation Safety Board has assigned three investigators to the case, said chief investigator Clint Johnson. Johnson told Channel 2 News that the crash site is "about seven miles off of Knik Goose Bay Road."
A 2011 mid-air collision in Talkeetna left a family of four dead when the two pilots were on different radio frequencies and were not communicating with each other. - KTUU.