Two small planes collided mid-air in Alaska over the weekend, leaving both pilots injured.

Alaska State Troopers rushed to two separate crash sites in Matanuska-Susitna Valley around 1 p.m. on Saturday, finding one pilot in serious condition and the other with just moderate injuries. Both were taken to regional hospitals.

There were no passengers onboard either plane.

According to authorities, one of the planes was an Alaska Wildlife fixed-wing aircraft flown by a trooper.

"A significant accident site," the National Transportation Safety Board's Clint Johnson said. "One of the witnesses did indicate that one of the wings actually separated from the airplane after the collision."

The NTSB is still trying to figure out exactly what happened.

Watch the clip from "America's News Headquarters" above.