Nine people were killed when a small jet crashed and exploded on a highway in Florida on Sunday.

Axar.az reports, citing BBC, the Learjet 60 was en route from Austin, Texas, to the Bahamas when it nosedived into a multi-lane highway.

The National Transportation Safety Board (NTSB) is investigating whether ice buildup and turbulence contributed to the crash, as well as whether human error played a role.

Here is what is known so far about the victims.

Texas tech entrepreneur Adam Robinson, his wife Helen Sharp, and their two children, Emma, 4, and Charlie, 2, were among those killed, according to a joint statement issued by some of the victims' families.

Robinson described himself on LinkedIn as the founder and CEO of RB2B and Retention.com, as well as the CEO of Moltsets. Sharp was an artist, according to media reports.

Rachel Reed, Charmi Fehr and Anita Maria Cetina were also aboard the jet along with Robinson, Sharp and their children. Their relationship with the family has not yet been established.

Jeff Gregory, 55, was identified as the pilot by East Coast Jets, a private charter company where he had previously worked.

US media have identified 20-year-old Nathalia Filgueiras as the co-pilot. She obtained her pilot's licence at the age of 17.