Sigmon is due to be executed today (March 7) after being charged with murder in 2001.

The now 67-year-old killed the parents of his ex-girlfriend, Rebecca Barbre, whom he’d recently broken up with at the time.

He went into her parents’ Greenville County, South Carolina, home and beat them to death with a baseball bat.

Sigmon also attempted to kidnap and kill Barbre, but was unsuccessful.

Brad Sigmon pictured at the age of 33 (Brad Sigmon’s legal team/USA Today)

In light of his crimes, Sigmon received two death sentences and has been on death row for over two decades. He was also handed a 30-year prison sentence for burglary.

And now Sigmon’s day of execution has arrived and he will die by firing squad later today.

He chose how he wanted to die, and will be the first death row inmate in in 15 years to die by such a method.

It also marks the first time someone will be executed by firing squad in the state of South Carolina.

Like all death row inmates, Sigmon was given the chance to chose his final meal.

While the likes of Khalil Divine Black Sun Allah requested two cheeseburgers, fries, a well-done ribeye steak, six chicken wings, two strawberry sodas and a slice of apple pie, Sigmon reportedly opted for three buckets of KFC chicken.

Apparently his intention was to share it with his fellow death row inmates, Bo King, Sigmon’s lawyer, said.

In the lead up to Sigmon’s execution, King is doing what he can to try and save his client’s life.

He insists that the 67-year-old had a ‘psychotic break’ at the time of the murders.

“The death penalty is intended for the worst of the worst, and so in a case like Brad’s,” King argued.

“The evidence that he’s experiencing the psychotic break, that he’s not competent at the time of trial, we think that argues against the imposition of the sentence.”

Sigmon will be seated on the firing squad chair (South Carolina Department of Corrections)

Elsewhere, King has said that Sigmon wasn’t fully informed about his execution options when he decided to die by firing squad; particularly in regards to the lethal injection.

The lawyer penned in a letter as a means of a last minute plea last month: “Brad Sigmon has repeatedly asked for the basic facts needed to determine if South Carolina’s drugs are expired, diluted, or spoiled.”

Currently South Carolina execution laws requires officials to not reveal the doses of drugs used, how they are administered, who provides the pentobarbital and the names of members of the execution staff.

The letter went on, as per Mail Online: “He has thus far been denied. He chose the firing squad because he was unwilling to risk the prolonged, torturous death that he fears his friends endured.”