Officials said the fire that caused heavy damage at Elmer's Tavern Friday morning is "not suspicious."
Franklin County Arson Investigator Jim Schumacher said the blaze likely began in a storage room of the bar.
It caused some fire damage, and heavy smoke and water damage in the two-story structure.
Firefighters are working to put out a second-alarm fire at Elmer's Tavern in downtown Union.
There was heavy smoke coming from the building about 8:30 a.m. Friday.
Crews from the Union Fire Protection District and other area firefighters were dispatched to the scene.
Elmer's is located at the corner of Church and Main streets.