A Buford house fire around 2:30 a.m. Thursday, July 5, was potentially caused by fireworks, according to authorities.

Gwinnett County Fire Capt. Tommy Rutledge said firefighters responded to the 2000 block of Sklyar Leigh Drive, where flames were through the roof of the house.

“Firefighters quickly deployed fire attack hose lines and made immediate entry to combat the blaze and conduct a primary search. The blaze caused heavy damage to the attic and roof and extensive smoke, heat and water damage to the living space,” Rutledge wrote in a news release.

A man and woman escaped unharmed from the home after smelling smoke on the second floor, Rutledge said.

Fire investigators said they believe the fire was possibly caused by spent fireworks after some were found around the side of the house. Rutledge said it is “unclear where they were discharged from” at this time, and the exact cause is undetermined.

The Red Cross was called to help the displaced residents.