They reveal audio from the cockpit of the American Airlines plane evacuated due to fire.

An audio from the cockpit of an American Airlines plane reveals the critical moment when the crew requested emergency assistance due to a fire in the rear of the aircraft.

The incident occurred on Friday around 12:15 p.m. at San Francisco International Airport, before the flight took off for Miami International Airport.

"Mayday! Mayday! Mayday!" alerted a member of the flight crew from the cockpit, warning about the fire, cited Local 10 media.

The airplane, an Airbus A321-231 from American Airlines with registration N917UY, departed from gate B17 with the passengers already on board. As the plane was taxiing on the runway for takeoff, the crew alerted that there was smoke in the cabin.

"There is a fire at the rear of the plane. Send the rescue firefighters," requested the crew member, who immediately deployed the emergency ramps.

"They should be there in two minutes," replied an air traffic control employee.

The San Francisco Fire Department reported that three people suffered minor injuries and were treated at the airport.

Flight AA2045 was scheduled to arrive in Miami shortly before 9 p.m. on Friday, but it did not.

According to data from FlightRadar24 and the Federal Aviation Administration database, the aircraft involved is a 2015 model with a V2533-A5 turbofan engine.

The airline later reported that the fire was caused by a laptop with a lithium-ion battery inside a passenger's bag.

"The suitcase was quickly removed by our crew members and all the passengers exited the plane. We thank our crew members for their professionalism and apologize to our customers for the inconvenience," American Airlines stated in a press release.

According to the National Fire Protection Association (NFPA), overheating can cause fires in lithium batteries, and even explosions, when they are damaged or used, charged, or stored incorrectly.

NFPA recommends disconnecting a battery once it is fully charged, using compatible equipment, ceasing to use a battery if it is damaged, emitting an unusual odor, producing excessive heat, making explosion sounds, swelling, or changing color.

The Federal Aviation Administration (FAA) of the United States announced an investigation of the incident.