An Applebee's in Antioch caught fire early Thursday morning after someone threw some sort of accelerant through a restaurant window.
Fire investigators didn't immediately say exactly what kind of accelerant the person used, but whatever it was, it ignited a fire inside, doing enough damage to force the restaurant to temporarily close.
"Determined that accelerant was used through the window and started the fire in a booth," Contra Costa Fire Marshal Chris Bachman said. "The fire was contained to the booth in the restaurant."
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The restaurant's sprinkler system immediately kicked in, putting out the flames and keeping the damage to a minimum.
Investigators said they’re hoping to find surveillance video but are confident they’ll catch whoever is responsible.
"We’re hopeful that within a week we'll be able to track down leads and locate the person responsible," Bachman said.
The restaurant's manager said it will likely take about one week to reopen.