The end is near for a former Florida policeman on death row.

Manuel Pardo is scheduled to be executed on Tuesday for killing nine people in the 1980's.

The 56-year-old inmate was convicted in 1988 for a killing spree that lasted three months.

Pardo did not contest the execution order when it was first given and even asked for the death penalty during his trial saying, "I am a soldier, I accomplished my mission and I humbly ask you to give me the glory of ending my life and not send me to spend the rest of my days in state prison."

However, his attorney has petitioned against the death penalty by stating that Pardo is mentally ill.

"I think that anyone who would get up and ask a jury sentence him to death is insane," lawyer Ronald Guralnick said, as reported by MSNBC.

Pardo is a Navy veteran who started his law enforcement career with the Florida Highway Patrol. He was fired for falsifying traffic tickets but eventually moved on to become a state police officer in Sweetwater, a city in Miami-Dade County.

His killing spree began in 1986 which lasted for around 92 days. Pardo killed six men and three women along with committing several robberies. He kept a detailed journal of the killings at his home along with photos of each of his victims.

The police were able to track Pardo down after he started using the credit cards of the people he killed.

Pardo's execution was a long time coming and families of the victims are eager to see the end.

"It's about time. It's been so long, you just want to get it over with," said Musa, whose sister, Sara Musa, was killed by Pardo, as reported by the Sun Sentinel. "I still have nightmares and I don't have words to describe it. I can't believe that it's happening."

The execution is set to take place at the Florida State Prison in Starke at 6 p.m. Tuesday.