At least A man was killed On Monday, when a medium -sized professional jet slipped from the landing corridor at Arizona’s Scottsdale Regional Airport and clashed with another parked jet, authorities said.

Dave Wello, a spokesman for the Scottsdale Fire Service, said in a press conference that at least four other people were injured in the crash.

One person remains trapped inside one of the aircraft and first aid working for their release, he said, while three other people were taken to hospitals in the area.

Dave Wello did not give any further details and it was not immediately clear what caused the jet to slip from the corridor.

The Federal Air Force Administration said in a statement that Investigates the crashwhich, he said, was about a Learjet 35A that slipped from the corridor, which then collided with a Gulfstream 200 jet.

The incident comes in a period of increased US air security control.

Two small aircraft collided at the Arizona Regional Airport runway, an accident with at least one dead, according to US state authorities

Researchers at National Transportation Safety Board investigate Three deadly accidents in recent weeks: The collision of a passenger aircraft and helicopter of the US Army Black Hawk in Washington, who killed 67 people, a medical aircraft crash in Philadelphia that killed seven people and an Alaska air crash that killed 10 people.