UPDATE: Fire officials shared there was a woman in her 40’s-50’s trapped inside. She has been taken to a nearby hospital to be treated for smoke inhalation. Her injuries were not reported as life-threatening.

According to fire officials, there were several people trapped in the house, but they were able to escape before the firefighters arrived. Officials say the building was supposed to be vacant, but aren’t sure why people were living there.

The cause of the fire is still under investigation.

ST. LOUIS – A building was on fire Tuesday morning in the Marine Villa neighborhood. The St. Louis Fire Department said there was a “report of persons trapped.”

FOX 2’s Bommarito Automotive Group SkyFOX helicopter flew over the scene in the 3600 block of Wisconsin Avenue. It is unknown at this time how the fire started. A fire chief on the scene said the building was vacant, but squatters were inside. All of them made it out before firefighters arrived. One person was taken to a hospital for smoke inhalation.

The fire started at about 6:15 a.m. Multiple fire crews were on the scene. They made entry into the building at about 6:50 a.m.

FOX 2 will continue to update this story with more information as it becomes available.