An airplane crashed at Addison Airport on June 30, killing all 10 people inside.

According to WFAA, the plane was a twin-engine Beechcraft BE-350 King Air, a "multimillion-dollar aircraft with high-end finishes." The plane crashed into a hangar shortly after takeoff at 9:11 am. The 10 people aboard included eight passengers and two crew members.

Judge Clay Jenkins tweeted that the families of the deceased were being notified.

The National Transportation Safety Board has launched an investigation of the crash.

In a press conference, NTSB officials said that the plane was headed to St. Petersburg, Florida, and that it collided with a hangar and burst into flames. There was no one inside the hangar, but there were two aircraft — a Falcon jet and a helicopter — and both sustained damage.

NTSB investigator Jennifer Rodi said that a team had already walked through the scene to observe the wreckage, including evidence that it had been damaged by the impact of the force and by fire.

Specialists will evaluate factors such as the experience of the flight crew, the maintenance of the aircraft, and environmental elements, including weather and air traffic control.

Bruce Landsberg, vice chairman of the NTSB, said that the agency would have a preliminary report within two weeks and asked any witnesses or people who had video to send it to witness@ntsb.gov.

Landsberg said that there are reportedly three videos of the accident in existence.

"We don't know a lot about the people on board, but we know that the destination on an instrument flight plan was going from Addison to St. Petersburg, Florida," he said.

Landsberg said that they also don't have the tail number of the plane.

"It appears that the aircraft changed hands recently, so it's not clear to us at this point in time what the property's tail number is," he said.

CBS said that models such as the King Air are often used for business purposes and that the previous owner was a charter company based in Chicago.

Addison Airport is home to a number of charter airlines, such as Bombardier FlexJet.