Authorities say they have confirmed a fifth death in a fiery small plane crash in Florida.
The private plane was heading east into heavy fog when it took off.
The FAA said in a statement that four people were on board the Cessna 340 plane when it crashed Sunday morning.
The pilot was identified as 70-year-old John Shannon, an attorney from Lakeland, Florida.
Shannon's two daughters Olivia, 24, and Victoria, 26, both died, as well as Victoria's husband Peter Worthington and their 32-year-old family friend Krista Clayton.
"For unknown reasons, but likely related to the fog, it crashed shortly after takeoff", the statement read.More news: Virat Kohli, Anushka Sharma throw classy reception, shine in traditional ensemble
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An airport employee who was photographing the thick fog captured sound of the crash on video.
Polk County Fire Rescue arrived to find the plane engulfed in flames at 7:31 a.m. and managed to extinguish the blaze about 15 minutes later spokeswoman Tina Mann said.
Bartow is about 50 miles (80 kilometers) southwest of Orlando.
The plane that crashed was a twin-engine plane, police said in a tweet.
Investigators for the National Transportation Safety Board and Federal Aviation Administration have been notified and will investigate the cause of the crash, deputies said.