Two people were killed when a plane crashed into a a Colorado business park and burst into flames early Friday morning.

A Beechcraft BE35 with two people on board crashed shortly after taking off from Centennial Airport, just outside Denver, around 6.25am, according to the Federal Aviation Administration.

Both people, who have not been identified were killed in the crash, which sparked a fire near a business park with a large generator, reported KDVR.

South Metro Fire Rescue crews responded to the scene, which was initially reported as an explosion.

‘We did arrive on scene just south of Centennial Airport,’ South Metro Fire Rescue Public Information Specialist Brian Willie said a press conference.

‘We did find a single-engine aircraft that was fully involved with a structure that was threatened with a large bank of generators that was also threatened. We were able to get water on the fire and put that out.’

South Metro Fire Rescue confirmed there was no damage to the generators or the building that was threatened by the flames, reported CBS News Colorado.

Desmond Brown, who works in a neighboring building, described hearing a ‘loud boom’ after the plane went down.

‘I was inside to my place of business, and I was working, and we just heard a loud boom,’ Brown told Denver7.

‘So when we heard a loud boom, me and my coworkers came outside, we noticed a big ball of flames across them. Over here, we was wondering what it was. 

‘We thought it was a generator at first, and then next thing we heard when another coworker came up to and said it was a plane that went down.’

The Douglas County Sheriff’s Office said they are investigating the crash along with the NTSB.

The Sheriff’s Office Public Information Officer Deborah Takahara said it was lightly raining at the time of the crash and noted that it was unlikely that airport operations had been impacted. 

It comes just weeks after a pilot walked away unscathed from a crash at Centennial Airport.

On August 22, a single-engine biplane nose-dived into a field beside the airport, according to South Metro Fire Rescue.

The pilot was uninjured and crews worked to contained a small fuel leak from the crash.

This is a developing story.