A hotel was evacuated and roads were closed after an MMA gym in the Midway District went up in flames Thursday morning. San Diego Fire-Rescue responded to the Victory MMA fitness center at around 6:20 a.m. and saw heavy flames pouring out of the second story. A MMA class was in progress, but all gym members had evacuated themselves before crews arrived and firefighters got to work tackling the fire, San Diego police said. A nearby Wyndham Garden hotel was also evacuated. Someone reported seeing the fire in the heating unit of the sauna, according to SDFD. The cause of the fire remained under investigation. The fire was still burning around 7 a.m. SDFD closed Midway Drive between Kemper and Duke streets but the roadway was reopened later that morning.