An unattended charcoal grill caused a two-alarm fire that left 12 people homeless Thursday night, a fire department spokesman said.

Mark Brady, spokesman for the Prince George’s County Fire Department, said the fire was on a Clinton townhome’s back deck. Authorities believe the grill started the 8:40 p.m. blaze on Surrats Village Drive, causing an estimated $200,000 worth of damage.

Brady said the fire displaced two families — including six adults and six children — from two townhomes in the 5900 block of Surrats Village Drive.

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