Five people died after an Amazon Air cargo plane crashed while landing at Miami International Airport in Florida, US. The Boeing 767-300 cargo aircraft was operated by 21 Air for Amazon Air. It was flying to Miami from Luis Muñoz Marín International Airport in San Juan, Puerto Rico, on Sunday afternoon. Officials said the plane landed at around 14:00 local time but then went off the runway. Flight tracking data showed that the aircraft was travelling at about 129 mph (207 km/h) when it left the usable part of the runway. After leaving the runway, the plane continued into an area near the airport and hit several vehicles on a nearby road. The aircraft then caught fire and produced heavy smoke. The plane eventually came to a stop near a parking area used by an Amazon warehouse and other businesses. Images from the scene showed the aircraft badly damaged and resting forward on its nose. Miami-Dade County Mayor Daniella Levine Cava confirmed that at least five people had died. She described the incident as an extremely difficult day for the community. Five other people were also injured. Three of them were taken to a local trauma centre in critical condition, while two others were taken to hospitals for treatment. Emergency crews responded very quickly. Miami-Dade Fire Rescue said more than 60 emergency units and around 200 firefighters responded to the initial crash report. Firefighters found the aircraft engulfed in flames when they arrived. They also rescued a person who had become trapped under a vehicle. A fuel leak from the aircraft continued after the crash. Specialist firefighters worked to control the leak and safely shut down the aircraft's engine. Officials said the incident did not pose a wider danger to the local community. The crash also caused major disruption at Miami International Airport. All runways were temporarily closed and flights were stopped. The Federal Aviation Administration said flights departing from the airport faced delays of about six hours. The accident happened during one of the busiest travel periods in the United States. Millions of people were expected to travel during the Labor Day holiday weekend, increasing the impact of the airport closure. Weather conditions may also be an important part of the investigation. Flight tracking information reported thunderstorms and strong, gusting winds around Miami at the time of the crash. However, authorities have not said that weather caused the accident. Amazon confirmed that one of its Air flights operated by 21 Air had been involved in an incident while attempting to land. The company said it was still gathering information and working with local authorities. Amazon later said it was heartbroken after learning that five people had died. The company expressed sympathy to the victims' families and everyone affected by the crash. The Federal Aviation Administration and the National Transportation Safety Board are expected to investigate what happened. Investigators will examine the aircraft, runway, weather conditions, flight data and other evidence to determine why the plane was unable to stop safely after landing. At this stage, the exact cause of the crash remains unknown. Authorities are continuing their investigation while emergency crews deal with the remaining hazards at the crash site.