Moments before a private jet slammed into a Florida highway, the pilot calmly told an airport controller that the aircraft 鈥渨as not going to make the runway鈥� since it had lost both engines.

The jet, with five people aboard, was bound for the airport in Naples when it tried to make an emergency landing on Interstate 75 on Friday afternoon. But witnesses say it collided with a vehicle 鈥� the wing of the plane dragging a car before slamming into a wall. An explosion followed, with flames and black smoke rising from the scene.

Two people were killed, according to the Collier County Sheriff鈥檚 Office, but it wasn鈥檛 immediately know whether the victims had been passengers on the plane or were on the ground.

Federal authorities have launched an investigation into the crash near Naples, just north of where the interstate heads east toward Fort Lauderdale along what is known as Alligator Alley. One National Transportation Safety Board investigator arrived at the crash site Friday afternoon, with several more expected to arrive on Saturday.

The plane had taken off from an airport at Ohio State University in Columbus, Ohio, at about 1 p.m. It was scheduled to land in Naples around the time of the crash, Naples Airport Authority spokesperson Robin King said, when pilot contacted the tower requesting an emergency landing.

鈥淕ot that. Emergency. Clear to land. Runway. Two. Three,鈥� the air traffic controller responded to the pilot, in audio obtained by The Associated Press.

鈥淲e鈥檙e clear to land but we鈥檙e not gonna make the runway. We鈥檝e lost both engines,鈥� the pilot calmly replied.

The tower lost contact, and then airport workers saw the smoke from the interstate just a few miles away, King said.

King said they sent fire trucks with special foam to the scene, and three of the five people on board were taken from the wreckage alive.

Brianna Walker saw the wing of the plane drag the car in front of hers and slam into the wall.

鈥淚t鈥檚 seconds that separated us from the car in front of us,鈥� she said. 鈥淭he wing pulverized this one car.鈥�

Walker and her friend spotted the plane moments before it hit the highway, allowing her friend to pull over before the crash.

鈥淭he plane was over our heads by inches,鈥� she said. 鈥淚t took a hard right and skid across the highway.鈥�

According to the FlightAware aircraft tracker, the plane was operated by Hop-a-Jet Worldwide Charter based in Fort Lauderdale, Florida. The aircraft had been scheduled to fly back to Fort Lauderdale on Friday afternoon.

Hop-a-Jet said Friday night that it had 鈥渞eceived confirmed reports of an accident involving one of our leased aircraft near Naples鈥� and would send a team to the crash site, the Naples Daily 亚洲天堂 reported.

鈥淥ur immediate concern is for the well-being of our passengers, crew members, and their families,鈥� the statement said. It didn鈥檛 contain details of the crash.

A spokesperson for Ohio State University said the aircraft is not affiliated with the university, and they had no further information about it.

Federal authorities said a preliminary report about the cause of the crash can be expected in 30 days.

The Associated Press