South Los Angeles medical marijuana dispensary goes up in flames

SOUTH LOS ANGELES (KABC) -- A medical marijuana dispensary in South Los Angeles went up in flames early Tuesday morning following reports of an explosion at the building.

The fire erupted around 3:40 a.m. in the 6000 block of South Broadway. Approximately 100 Los Angeles City firefighters knocked down the fire around 4:20 a.m.

According to firefighters on scene, no one was inside the structure at the time of the fire, and no injuries were reported.

Fire officials said the flames were mostly confined to the second story of the business.

Arson investigators were called to the scene after witnesses told fire officials they heard an explosion prior to the fire.

The cause of the fire was under investigation.