Editor's note: The drivers of the semitruck and the car with the flat tire were mixed up in Florida Highway Patrol's initial reports. This story has been corrected.

UPDATED STORY:Highway Patrol identifies one of the dead in Turnpike triple-fatality caused by flat tire

Three people were killed early Tuesday on Florida's Turnpike north of State Road 60 in a crash that shut down all southbound lanes for nearly 11 hours.

A Fed-Ex semi-truck with a double trailer slammed into two vehicles traveling just 5 mph about 12:40 a.m., according to Florida Highway Patrol.

The car in the front had a flat tire, FHP spokeswoman Lt. Kim Montes said.

More:1 person dead, 3 injured after 2-vehicle crash on U.S. 1 in Indian River County

More:Pennsylvania woman killed, Port St. Lucie woman injured in rollover crash on I-95

A trooper and a road ranger stopped about 5:30 p.m. Monday to assist the driver of that vehicle, Alexander Molina, 31, of Nebraska. His car was a 2003 Mitsubishi.

Molina was pulled over on the shoulder at mile marker 220, three miles from the crash. He was unable to remove the lug nuts from the flat tire, but refused assistance and said he would make his own arrangements, Montes said.

At some point, Molina resumed driving in the right lane, with Sergio Caceres Baca, 30, of Miami, driving behind him in a 2002 Ford Explorer.

The Fed-Ex truck came up behind the two vehicles at normal speed, not realizing the two were traveling at a very low speed, according to FHP.

The truck hit the rear of the Ford Explorer and then the rear of the Mitsubishi before it jackknifed.

More:Fort Pierce drunk driver sentenced to 13 years in prison for crash that killed Vero Beach man

More:Family remembers Vero Beach newlywed killed in hit-and-run as selfless, dedicated teacher

Three passengers of the Ford Explorer were pronounced dead at the scene. Their names have not been released. They were not wearing seat belts and two were ejected.

Baca, who was wearing his seat belt, had serious injuries and was taken to Orlando Regional Medical Center.

Molina and the driver of the Fed-Ex truck, Lori McMillian, 57, of West Palm Beach, both had minor injuries.

Southbound lanes reopened about 11:20 a.m.