Gov. Janet Mills, who lives in Farmington, confirmed the death and several injuries in a Monday statement and said the ME fire marshal's office "will thoroughly investigate the cause and origin of this devastating explosion".
Debris could be seen raining down after the blast, which was reportedly heard for miles.
Landry tells our media partner, WMTW that the LEAP building was a few months old.
State Rep. Scott Landry, who is also a Farmington selectman, says the explosion happened after firefighters responded to the scene when employees reported smelling propane gas.
Kim Hilton, who works at the nearby University of ME at Farmington, told the Associated Press that the blast rocked her building, too. Five firefighters were injured, along with one civilian.
The Franklin County Regional Communications Center said on Facebook that at around 9 a.m. local time that a "large incident" occurred on Farmington Falls Road, urging locals to "stay away from the area".
"It felt like someone hit our building with a vehicle", she said.
One person is reported dead after a Monday morning explosion on Farmington Falls Road in Farmington. Traffic was being detoured to Route 156.
Just before noon, Sen.
Peck called it an "unfortunate, tragic accident", and said an early investigation showed the explosion may have been caused by a propane or natural gas leak.
Multiple people have been injured in an explosion at the LEAP facility in Farmington, Maine, according to a spokeswoman with the Franklin County Sheriff's Office. "I'm monitoring the tragedy in Farmington + hoping for a speedy recovery for the injured".
Information from the Morning Sentinel and The Associated Press was used in this story.
We'll update this story as new information becomes available.