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Thomas Gilbert Jr. in March 2014

Thomas Gilbert Jr. was eventually sentenced to 30 years in prison for killing his father on Friday and the toll that the three-year case took on him is evident in his changing appearance.

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The Princeton graduate, 34, shot his father, Thomas Gilbert Sr., in their Upper East Side Home on January 4, 2015 after arguing with him about threatening to lower his allowance.

Gilbert Jr. had tried to plead non-guilty by insanity amid claims that he was mentally ill, but a New York judge rejected that defense.

Thomas Gilbert Jr. in March 2014

Thomas Gilbert Jr. on Friday

Thomas Gilbert Jr. on Friday

Thomas Gilbert Jr. was eventually sentenced to 30 years in prison for killing his father on Friday and the toll that the three-year case took on him is evident in his changing appearance. The graduate in Princeton is pictured on the left at a ballet gala in March 2014 and is seen during his sentencing session on Friday

Princeton graduate, 34, shot his father, Thomas Gilbert Sr., in their Upper East Side Home in 2015 after arguing with him about threatening to lower his allowance. It is pictured above during a hearing in January 2015

Princeton graduate, 34, shot his father, Thomas Gilbert Sr., in their Upper East Side Home in 2015 after arguing with him about threatening to lower his allowance. It is pictured above during a hearing in January 2015

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Princeton graduate, 34, shot his father, Thomas Gilbert Sr., in their Upper East Side Home in 2015 after arguing with him about threatening to lower his allowance. It is pictured above during a hearing in January 2015

He seemed confused and drawn in an orange jumpsuit during his Friday hearing, almost unrecognizable to the fresh faces and tanned playboy he was before he was arrested and charged with the murder in January 5, 2015.

After graduating from his father's alma mater Princeton University in 2009, he remained unemployed and lived in an apartment in Chelsea with the financial support of his parents.

He was also a fixture in the Hamptons who like to surf, according to Hamptons.com. He had lived for $ 1,000 a week and his apartment paid for it separately.

Thomas Gilbert, Sr. Wainscott Capital Partners founded in 2011 after decades of success on Wall Street. He was shot by his son in his Upper East Side Residence on January 4, 2015

Thomas Gilbert, Sr. Wainscott Capital Partners founded in 2011 after decades of success on Wall Street. He was shot by his son in his Upper East Side Residence on January 4, 2015

Thomas Gilbert, Sr. Wainscott Capital Partners founded in 2011 after decades of success on Wall Street. He was shot by his son in his Upper East Side Residence on January 4, 2015

Thomas Jr. had lived richly from his parents and traveled the world with their money. They paid his memberships for exclusive clubs in the city and the Hamptons, paid his rent on his apartment in Chelsea. It is pictured above in 2014

Thomas Jr. had lived richly from his parents and traveled the world with their money. They paid his memberships for exclusive clubs in the city and the Hamptons, paid his rent on his apartment in Chelsea. It is pictured above in 2014

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Thomas Jr. had lived richly from his parents and traveled the world with their money. They paid his memberships for exclusive clubs in the city and the Hamptons, paid his rent on his apartment in Chelsea. It is pictured above in 2014

However, he was furious when his father insisted that he get a job and take care of himself.

Thomas Sr. his son had gradually reduced his allowance of $ 1,000 a week, he said, and on the day he died, he told him that the help was over for good.

On Wednesday, assistant DA Craig Ortner argued that it was pre-meditated and that he was unhappy about being cut off.

He had just reduced it from $ 400 to $ 300. & # 39; The free ride was coming to an end & # 39 ;, Ortner said and added: & # 39; It was not a symptom of psychosis, it was a symptom of justice & # 39;

Thomas Gilbert Jr. depicted after he was charged with a crime in September 2014
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Thomas Gilbert Jr. depicted after he was charged with a crime in September 2014

Gilbert Jr. shown in June 2019

Gilbert Jr. shown in June 2019

Gilbert Jr. was furious when his father insisted that he get a job and take care of himself

Shelley Gilbert, Thomas' mother, is depicted at the court. She asked the judge to show her son leniency and said she wanted him to be caught somewhere in prison close to where she lives

Shelley Gilbert, Thomas' mother, is depicted at the court. She asked the judge to show her son leniency and said she wanted him to be caught somewhere in prison close to where she lives

Shelley Gilbert, Thomas' mother, is depicted at the court. She asked the judge to show her son leniency and said she wanted him to be caught somewhere in prison close to where she lives

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Gilbert Sr. had recently established a hedge fund, but had been rejected for a $ 1.5 million loan to finance it.

Until that time Thomas Jr. had lived richly from his parents and traveled around the world with their money.

They paid his memberships for exclusive clubs in the city and the Hamptons. They paid his rent at his apartment in Chelsea, his Jeep and all the parking tickets he had with it.

The defense claimed that he could not keep a job because he was schizophrenic and that his parents therefore supported him.

Thomas Gilbert Jr. appears for his trial in the Manhattan Supreme Court on Tuesday, May 28, 2019

Thomas Gilbert Jr. appears for his trial in the Manhattan Supreme Court on Tuesday, May 28, 2019

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Thomas Gilbert Jr. appears for his trial in the Manhattan Supreme Court on Tuesday, May 28, 2019

Before committing the murder, he investigated murder online and bought a gun

Before committing the murder, he investigated murder online and bought a gun

Before committing the murder, he investigated murder online and bought a gun

His mother, Shelley, had gone out to get him a Coca Cola and a sandwich before he opened fire on his father.

On Friday, Shelley appealed to the court to ask the judge for leniency.

She was & # 39; weeping & # 39; when she read a statement aloud and her son a & # 39; good boy & # 39; mentioned who struggled with psychological problems.

Before committing the murder, he investigated murder online and bought a gun.

Gilbert Sr. had recently established a hedge fund, but had been rejected for a $ 1.5 million loan to finance it.

Thomas Gilbert, Jr. can be seen at Central Booking in Manhattan Criminal Court, January 5, 2015

Thomas Gilbert, Jr. can be seen at Central Booking in Manhattan Criminal Court, January 5, 2015

Thomas Gilbert, Jr. can be seen at Central Booking in Manhattan Criminal Court, January 5, 2015

Gilbert Jr. used a 40-caliber Glock, which he had driven to Ohio to buy to commit the murder. He is pictured at the Manhattan Criminal Court on January 9, 2015
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Gilbert Jr. used a 40-caliber Glock, which he had driven to Ohio to buy to commit the murder. He is pictured at the Manhattan Criminal Court on January 9, 2015

Gilbert Jr. used a 40-caliber Glock, which he had driven to Ohio to buy to commit the murder. He is pictured at the Manhattan Criminal Court on January 9, 2015

Until that time Thomas Jr. had lived richly from his parents and traveled around the world with their money.

His mother Shelley testified before the defense and said he was mentally ill. & # 39; Tommy was much sicker than we ever really knew, & # 39; she said earlier this year. It was Shelley who called 911.

In her recorded call, she told the operator when she was asked who shot her husband: & My son.

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& # 39; He's crazy, but I didn't know he was this note. & # 39; He shot him in the head. & # 39;

Gilbert Jr. used a 40-caliber Glock, which he had driven to Ohio to buy to commit the murder.

Previously, he had researched websites such as & # 39; hireakiller.com & # 39; and & # 39; hitman.com & # 39 ;.

The old roommate of Gilbert Jr. testified during the trial that he & # 39; several times & # 39; had tried to kill him.

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