DENVER (KDVR) Two people are dead after a small aircraft crashed and caught fire near the Centennial Airport on Friday morning.

Just after 6:20 a.m., the Douglas County Sheriff’s Office said a call initially came in for an explosion. The sheriff’s office and the South Metro Fire Rescue arrived on scene to find a small aircraft on fire in a business park at 8636 South Peoria Street. This is just south of the Centennial Airport.

Firefighters were able to contain a fire that the rescue said was threatening a structure and large generators, however, the sheriff’s office confirmed that two people have died.

The rescue said there was no other damage to the building or generators, and no other people were involved, and there were no other injuries.

This is an ongoing investigation.

The National Transportation Safety Board said the Beech BE35 airplane crashed under unknown circumstances, and an investigator will be documenting the scene, examining the plane and taking the aircraft to a facility to evaluate it.

During the investigation, the board will look through several factors, including flight track data, This is an ongoing investigation, the pilot’s license, witnesses, aircraft maintenance records and weather.

The board is asking anyone who witnessed or has surveillance video of the crash or other information to contact them at witness@ntsb.gov.