The Pasadena bar and grill was found around 3:05 a.m. Friday engulfed in flames.
One Anne Arundel County firefighter was treated at the scene after falling from a ladder.
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Anne Arundel County Police officers have determine the fire was intentionally set.
Police estimate restaurant damages totaling $200,000.
Anyone with information is asked to call 410-222-TIPS. This case is an active criminal investigation.