A Florida man convicted of killing his estranged wife's sister and parents before setting their house on fire 35 years ago will be put to death next month, which could extend the Sunshine State's record number of executions to 12.

David Pittman, 63, is set to be executed on Sept. 17 under a death warrant signed by Republican Gov. Ron DeSantis on Friday.

Pittman was convicted in 1991 and sentenced to death on three counts of first-degree murder, as well as arson and grand theft, after the killings that were carried out the year before.

FLORIDA BREAKS 50-YEAR EXECUTION RECORD WITH NINTH DEATH SENTENCE CARRIED OUT THIS YEAR

Pittman and his wife, Marie, were going through a divorce when he went to the home of her parents, Clarence and Barbara Knowles, in May 1990 and stabbed them and their younger daughter, Bonnie, to death, according to officials.

He then lit the Polk County home on fire and stole Bonnie Knowles' car before also setting the vehicle on fire, investigators said.

A witness identified Pittman as the man running away from the burning car and a jailhouse informant testified that Pittman had admitted to the stabbing deaths of his wife's family.

The Florida Supreme Court will hear an appeal seeking to block the execution, and an appeal will also likely be filed with the U.S. Supreme Court.

In 2022, the state Supreme Court denied Pittman's claim that he was intellectually disabled as well as allegations that his death sentence was illegal because he had not received an evidentiary hearing on his disability claim.

EXECUTION DATE SET FOR FLORIDA MAN CONVICTED OF KIDNAPPING WOMAN, KILLING HER

Pittman is set to be the 12th person put to death in Florida this year, including Kayle Bates and Curtis Windom, who are scheduled for execution later this month.

Florida has executed more people this year than any other state, with 9 after an execution in July. Texas and South Carolina are tied for the second-most with four each.

Before this year, Florida's previous record for executions in a year since the death penalty was restored in 1976 was eight in 2014.

The Associated Press contributed to this report.

Billy Joel is closing his motorcycle shop in Long Island, New York, and auctioning off his personal collection of bikes as he battles a brain disorder.  

The 76-year-old singer revealed in May that he had been diagnosed with normal pressure hydrocephalus (NPH), which affects his vision, hearing and balance, he said on social media at the time. 

Joel also canceled all of his tour dates for 2025 and through July 2026. 

Earlier this week, Joel's representative Claire Mercuri told The Associated Press that the music icon will be shuttering 20th Century Cycles in Oyster Bay in late September and selling his collection at auction later this year due to his medical issue. 

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NPH is a condition that occurs when cerebrospinal fluid builds up inside the skull and presses on the brain. It is most likely to impact people older than 65. Treating the condition involves surgery to implant a shunt to drain excess fluid from the inside of the skull, according to the Cleveland Clinic. 

In his May statement announcing his diagnosis, Joel noted that the condition had been "exacerbated by recent concert performances, leading to problems with hearing, vision and balance."

The statement added, "Under his doctor’s instructions, Billy is undergoing specific physical therapy and has been advised to refrain from performing during this recovery period."

Joel, who grew up in nearby Hicksville, opened 20th Century Cycles in late 2010 as a place to maintain and repair his motorcycles, restore and customize ones he bought and showcase his collection for the public at no charge.

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"It’s basically promoting an aesthetic here," he said in a 2013 YouTube video filmed at the shop. "I like older style. I like the automotive style from the ‘30s to the ’60s. I wanted to collect a whole bunch of those kinds of bikes, put ’em in one place and let people see what that era of bike looked like. Because it’s starting to be a lost aesthetic."

The "Piano Man" hitmaker said he also wanted to bring foot traffic and business to downtown Oyster Bay — a ritzy waterfront community about 25 miles east of midtown Manhattan — where part of the street that includes 20th Century Cycles was renamed Billy Joel Way in 2023.

"I’ve been living in this community for a long time," Joel said in the video. "I actually grew up not far from here. And I’d like to get a little interest going into the town and the village."

Joel’s nearby home in Centre Island is listed for $29.9 million, and he has been living in South Florida, while keeping a home in Sag Harbor on Long Island.

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The shop became a popular stop for motorcycle enthusiasts and tourists. It was home to Joel’s collection of more than 75 bikes, which date all the way back to the 1940s and include Harley-Davidsons, Triumphs, Ducatis, Moto Guzzis, Indians and BMWs. 

Joel noted that one of his most valuable bikes was a 1952 Vincent Rapide, which can sell for tens of thousands of dollars and sometimes more, according to auction sites.

Joel’s enthusiasm for motorcycles dates back decades. In 1982, he was riding a motorcycle on Long Island when he was struck by a car that ran a red light, injuring his left thumb and dislocating his right wrist. He spent about a month in the hospital. 

The singer has also ridden motorcycles during various benefits for 9/11 first responders, breast cancer and other causes over the years.

A date for the auction of his collection has not been set.

The Associated Press contributed to this report.