Media playback is unsupported on your device Media caption Smoke was seen billowing from the plane crash site

At least 16 people have died after a US military plane crashed in the southern state of Mississippi at around 16:00 local time (21:00 GMT) on Monday.

The crash happened in LeFlore County, about 100 miles (160km) north of Jackson, the state capital.

All 16 victims were on the Marine Corps aircraft and there were no survivors, Leflore County emergency management director Fred Randle said.

Mississippi Governor Phil Bryant said the incident was a "tragedy".

"Our men and women in uniform risk themselves every day to secure our freedom," he said.

US President Donald Trump tweeted on Tuesday morning: "Marine Plane crash in Mississippi is heartbreaking. Melania and I send our deepest condolences to all!"

No official details were immediately available on the circumstances of the crash.

Mississippi outlet the Clarion-Ledger said the plane came down in a soybean field on the Sunflower-Leflore county line, and left a five-mile trail of debris. It said the FBI was assisting at the scene.

Local Fire Chief Marcus Banks told the Greenwood Commonwealth that firefighters were driven back by several "high-intensity explosions", possibly caused by jet fuel igniting. He said 4,000 gallons of foam were sprayed at the aircraft in a bid to subdue the fire.

Captain Sarah Burns, a spokeswoman for the Marine Corps, said only that a US Marines KC-130 Hercules transport aircraft had "experienced a mishap".

"On behalf of the entire Marine Corps, I want to express my deepest condolences to the families of those killed in the aircraft mishap yesterday afternoon in Mississippi," said Marine Corp Commandant Gen Robert Neller.

"Our focus remains on notifying and supporting the families while we conduct a thorough investigation into the cause of this tragedy."