Savannah, Ga. - An Air National Guard C-130 cargo plane on a training mission crashed Wednesday along a road near a Georgia airport, killing at least five National Guard members from Puerto Rico, authorities said. Black smoke rose into the sky from a section of the plane that appeared to have crashed into a median on the road.

Firefighters later put out the blaze.

Air Force Senior Master Sgt. Roger Parsons said at a press conference that the plane crashed after taking off from Savannah/Hilton Head International Airport.   

A driver on a nearby road saw the plane plummet to the ground, CBS News correspondent Laura Podesta reports.

"Right when it came over a set of trees there, I saw it do a roll upside down," Jimmy Livingston said. "When it rolled upside down, it did a complete straight turn into the ground."

Capt. Jeff Bezore, a spokesman for the Georgia Air National Guard's 165th Air Wing, said the crash killed at least five people. He said he couldn't say how many people in total were on the plane when it crashed around 11:30 a.m.

Bezore said in a statement that the identities of those on the plane would be released upon notification of their next of kin.

The Air Force said the plane belonged to the 156th Air Wing out of Puerto Rico, and Puerto Rico National Guard Spokesman Maj. Paul Dahlen told The Associated Press that all those aboard were Puerto Ricans who had recently left the U.S. territory for a mission on the U.S. mainland.

Dahlen said initial information indicated there were five to nine people aboard the plane, which was heading to Arizona. He did not have details on the mission.

"We are saddened by the plane accident that occurred today in Georgia," Puerto Rico Gov. Ricardo Rossello said in a tweet. "Our prayers are with the families of the Puerto Rican crew."

A photo tweeted by the Savannah Professional Firefighters Association shows the tail end of a plane and a field of flames and black smoke as an ambulance stood nearby.

The only part of the plane that remained intact was the tail section, said Chris Hanks, the assistant public information officer with the firefighters association. The tail section was sitting on Highway 21 and the ground in front of it was black and littered with debris, he said.

The Savannah Air National Guard Base says the plane was doing a training mission when it crashed near the Savannah/Hilton Head International Airport.

The base has been heavily involved in hurricane recovery efforts in Puerto Rico. In September 2017, it was designated by the Air National Guard as the hub of operations to the island in the aftermath of hurricanes Irma and Maria, the base announced at the time.

Savannah/Hilton Head International Airport said on social media that flights were arriving and departing with minimal delays. It advised motorists that they may need to seek an alternate route to the airport.

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