More than 100 city firefighters and emergency personnel battled a five-alarm fire that broke out Sunday morning in a three story, multi-tenant, red brick warehouse in the 1700 block of Union Avenue in Baltimore's Hampden/Woodberry area, sending heavy smoke throughout the city.

Baltimore fire department spokesman Kevin Cartwright said Sunday that no injuries have been reported in the blaze, either among firefighters or civilians. He said the fire department was called around 6:30 a.m. and responded within minutes. They were still fighting the fire as of late Sunday morning. There were no reports that anyone was inside.

The fire, which was shown on national media, sent a plume of smoke that was visible for blocks, and the smell of smoke was noticeable from miles away. Cartwright said the building was approximately 100 feet wide and 400 feet long, but he did not have information about the owner or tenants.

The fire-damaged warehouse is less than two blocks from the old Union Mill at 1500 Union Avenue, which a local development group plans to convert to a $20 million apartment complex. That building was not damaged by the fire.

At least four streets were fully or partially closed in the area temporarily, including 41st Street, Union Avenue and the Jones Falls Expressway, with all southbound JFX lanes blocked as of late morning Sunday. The 41st Street bridge over the freeway was put into service as a platform for the spraying of water onto the building, which sits across the JFX from a large Pepsi bottling facility. The light rail station in the area also was shut down.

Authorities urged motorists to avoid traveling through the neighborhood. Cartwright said he did not know the cause of the fire and did not have an estimate for the damage.

-- Edward Gunts and The Associated Press contributed to this article

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