LINCOLN (AP) — Investigators are working to determine what caused a fire that heavily damaged a Lincoln bar and knocked out power in the surrounding area.

The fire started at the Karma Nightclub and Cabaret around 7:15 p.m. Saturday. Everyone was evacuated safely, but it took several hours to control the fire.

The club's owner Kyle Baun says he was heartbroken when he arrived to see his business in flames.

The roof collapsed during the fire. Lincoln Fire Battalion Chief Leo Benes said the business is a total loss.

Karma had been open just over a year. Previously the club was called The Q.

Bryan Ruhs, who worked as a DJ, says it was hard to watch the fire because the club was the first gay bar he ever went to.