Firefighters battled a structure fire in the Historic South-Central neighborhood of Los Angeles Wednesday morning.

Sky5 video showed flames burning through the roof of the two-story building, located in the 100 block of East Washington Boulevard.

Firefighters took a defensive mode since the building was vacant and had been involved in a previous fire, a spokesperson said.

The condition of the building created significant safety hazards but crews managed to prevent the fire from spreading to the surrounding buildings.

The Fire Department response prompted officials to close the Blue Line track on Washington Boulevard between South Grand Avenue and San Pedro Street.

The Blue Line track expected to remain closed until about 10 a.m.