An investigation is underway after a man died in a building fire in Southwest Baltimore on Sunday, according to the Baltimore Police Department.

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Police said officers responded to an alarm of a fire follow-up around 11:50 a.m. in the 2500 block of West Lexington Street.

Once at the scene, the Baltimore City Fire Department notified officers there was man, who was declared dead, found inside the building, police said.

Police said the original fire alarm happened around 11:30 p.m. on Dec. 3rd.

Arson and homicide units are currently investigating.

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Homicide detectives are asking anyone with any information to contact them at 410-396-2100.