Boston firefighters were called to the historic Suffolk Downs horse racetrack Monday evening after a fire erupted in one of its buildings.

The Boston Fire Department said around 11 p.m. that multiple units responded to the multi-alarm fire. Videos posted online showed several firefighters battling the blaze on ladders above the building.

Boston fire Suffolk Downs

Boston firefighters battling a multi-alarm blaze at the Suffolk Downs horse racetrack on May 30, 2022. (Boston Fire Department/Twitter)

"Companies are working at the 4th alarm at Suffolk Downs. Fire in the roof area, heavy smoke condition throughout the building," the Boston Fire Department tweeted with a video of its members attempting to extinguish the flames.

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According to the fire department, a limited water supply caused a 5th alarm to be ordered for the area.

Boston fire Suffolk Downs

Boston Fire Department drone pictures showing the fire and thermal imaging. (Boston Fire Department/Twitter)

The Suffolk Downs track was initially built in 1935 and was used to host live races until 2019. Since that time, the track has simulcasted races year-round, the Boston Globe reported.

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It is not immediately clear what caused the fire. The building had been reportedly closed since 6:30 p.m. Monday. 

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There have been no reported injuries as firefighters attempt to extinguish the flame.