Several firefighters injured during live-fire training in Miami-Dade

Three people were injured during a fire drill conducted by the Miami-Dade Fire Department on Friday, prompting an investigation into the incident.

“This was an event that some of our interns were attending, and unfortunately, as you know, there was a disastrous fire and we have one attendee who is in the hospital, and we are standing there praying and to hope for the best,” Miami-Dade County Mayor Daniella Levine Cava told CBS News Miami.

Sources told NBC Miami that one of the injured was not authorized to be in the building.

In radio traffic captured by NBC Miami, crews indicated that one of the injured was part of an international training exchange program.

According to WSVN.com, a rescue call was made during training.

“Mayday, mayday, mayday, we have a downed firefighter. We're taking him down the stairs,” the station reported, which was called in by radio. Later, radio traffic picked up crews saying, “Two victims who were initially inside came out. The third victim is an unconscious firefighter.”

It was reported that the training included developments in live fire training and additional alarms were sounded at the site as the fire burned.

The Miami-Dade Fire Department told WSVN that three people were taken to the hospital. One of the victims, believed to be a firefighter, was transported in serious condition.

The training took place in a vacant warehouse in Virginia Gardens, near Miami International Airport.

Cava confirmed with NBC News that the training was authorized.

“I have nothing else to tell you, but I can let you know that we are all deeply, deeply concerned and we are investigating, the state is investigating, our police department is investigating and our department of internal affairs,” Cava told the TV station.

The State Fire Marshal's Office was also summoned to assist in the investigation.