A former Marine, found guilty of murdering a six-year-old girl over 40 years ago, is slated for execution in Florida.

Unless a last-minute clemency is granted, 66-year-old Bryan Frederick Jennings will face lethal injection on Thursday at 6 p.m. at Florida State Prison near Starke.

Jennings was convicted for the 1979 murder of Rebecca Kunash in Brevard County and subsequently sentenced to death.

His case went through three trials, with the first two convictions being overturned on appeal.

According to his legal team, Jennings has declined a special last meal, but he will be provided with a cheeseburger.

His final trial in 1986 resulted a death sentence for the third time. On Wednesday the US Supreme Court denied his final appeal.

According to court records, Jennings was a 20-year-old on leave from the Marine Corps when he abducted Kunash from her home on on May 11, 1979.

Jennings removed a screen from her window while her parents were in another room and abducted her.

Bryan Frederick Jennings, 66, is set to die by lethal injection at 6pm on Thursday at Florida State Prison near Starke

He took her in his car to a canal where he raped her, bludgeoned and drowned her, according to trial testimony. 

He then ‘swung her by her legs to the ground with such force that she fractured her skull,’ court records show. The girl was then drowned in the canal, where her body was found later that day. 

Jennings was arrested a few hours later on a traffic warrant, where investigators found he matched the description of a man seen near the Kunash home when Rebecca disappeared. 

Shoe prints found at the home matched those Jennings was wearing, his fingerprints were found on the girl’s windowsill, and his clothes and hair were wet.

Jennings has filed numerous appeals in state and federal courts, most recently contending that he went months without a lawyer prior to Governor Ron DeSantis signing his death warrant in violation of his right to counsel. 

His current attorneys also say Jennings has improperly not had a clemency hearing since 1988.

In addition to the murder conviction, Jennings was sentenced to life in prison for kidnapping, sexual assault, and burglary. 

Jennings’ execution is one of three scheduled in Florida this week.

The death sentence will be the 16th this year under Republican Governor Ron DeSantis, making it a record.

Jennings was convicted and sentenced to death twice for the 1979 murder of Rebecca Kunash. Jennings abducted the girl, took her in his car to a canal and raped her before killing her

DeSantis has ordered more executions in a single year than any Florida governor since the death penalty was reinstated in 1976. 

The previous record was set in 2014 with eight executions. 

After Jennings, executions this year are scheduled November 20 for Richard Barry Randolph and December 9 for Mark Allen Geralds, which would bring the year’s total so far to 18.

At a recent news conference, DeSantis explained the unprecedented number of executions by saying his goal is to bring justice to victim families who have waited decades for the death sentences to be carried out.

‘Some of these crimes were committed in the ’80s,’ DeSantis said. ‘Justice delayed is justice denied. I felt I owed it to them to make sure this ran very smoothly. If I honestly through someone was innocent, I would not pull the trigger.’

An anti-capital punishment group, Floridians for Alternatives to the Death Penalty, sought US Supreme Court review of the issues and what it called the politicization of the process.

‘Florida’s death penalty system has become unrecognizable from the one the law promises,’ said Maria DeLiberato, legal and policy director for the group. 

‘Bryan Jennings was left without a state court lawyer for years, denied a clemency review in this century, and then selected for execution because of favorable political timing.’

The death sentence will be the 16th this year under Republican Governor Ron DeSantis , making it a record

Meanwhile in Oklahoma, Tremane Wood was scheduled to receive a lethal injection on Thursday. 

In South Carolina, Stephen Bryant was scheduled to die by firing squad on Friday.

A total of 41 people have died by court-ordered execution so far this year in the US, and at least 18 – including Jennings, Wood and Bryant – were scheduled to be put to death during the remainder of 2025 and next year, according to the Death Penalty Information Center.

Florida’s lethal injections are carried out with a sedative, a paralytic and a drug that stops the heart, according to the state Department of Corrections.