The Prince George’s County Fire Department is investigating a fire at a College Park home on Monday that caused $200,000 in damages, according to a news release. A family of four escaped unharmed before firefighters arrived.

At 8:15 a.m. on Monday, firefighters responded to a one-story home on the 5000 block of Muskogee Street and found an active blaze, which officials believe started on the back porch, the statement read. The house is unlivable, but a “shell” of it remains, fire department spokesman Mark Brady wrote in a text message.

Investigators from the Office of the Fire Marshal are looking into whether a discarded cigarette is the cause of the fire, although “the exact cause remains under investigation,” the statement read.