Four families are homeless in Clarksville after what appears to have been a meth lab explosion overnight.
Firefighters responded to an apartment complex located at 205 Lexington Drive shortly after 12 Midnight Tuesday.
First responders found a man outside one of the units screaming for help.
The 22-year-old victim was flown to Vanderbilt University Medical Center in Nashville with severe burns to his face and upper body.
The explosion blew out the windows of one of the units and separated the siding from the building.
“It's just amazing no one else was hurt,” said Jesse Reynolds, director of the 19th Judicial Task Force in charge of the investigation.
When firefighters doused the flames they discovered evidence of meth activity.
The apartment was sealed off and condemned.
The families living in the four units in the building were displaced.
A neighboring unit had two children, one and two years old, at home during the incident.
Red Cross volunteer, Connie Branchau, told Nashville's News 2 the family was completely surprised by the meth activity in their building.
“They have nothing except what they had on their back when they walked out. That's really sad for a young couple struggling to get along.”
Branchau added the mother had been wrapping Christmas presents when the blast went off, forcing the family to run outside, “Through no fault of their own and from not even a fire, they've lost everything they own.”
It's not clear how long it will take to clean up the building or when the families will be allowed back in.
Another member of the military who is serving overseas had his unit damaged and another service woman whose 11-year-old son was not at home when it happened also lived there.
“It's sad seeing those families, because they're suffering,” said Reynolds, “They had nothing to do with it. They weren't using the drugs, but they're the ones paying for it.”
The Clarksville chapter of the Red Cross told Nashville's News 2 this is the second meth related fire they've responded to in the month of December and the third since July.
The investigation into this case is ongoing and authorities told Nashville's News 2 charges against the man suspected of cooking meth are pending.
The American Red Cross is assisting the displaced families.
Click here to make a donation to the displaced families or call 931-645-6401.