An immigrant in the country illegally brutally beat an elderly Hudson Valley millionaire to death inside her home where the man worked.

On Thursday in Ulster County Court, Esdras Anibal Marroquin Gomez was sentenced to 22 years to life in prison for the 2015  murder of 83-year-old Lois Elizabeth Colley at her North Salem estate.

Colley's family members, including her son, Bryan Colley of Millbrook, told the court about the impact the murder has had on family members. Bryan asked the court, to keep the defendant in jail “until the day he dies," according to the Westchester County District Attorney's Office.

In Nov. of 2015, Colley was found beaten to death inside her North Westchester home. The 83-year-old was found dead in the laundry room of her 300-acre estate.

Gomez, a former employee of Colley, was charged with second-degree murder following a two-year investigation into the murder. He pleaded guilty to murder in May.

On Nov. 9, 2015, a farmworker found the body of Lois Colley lying in a pool of blood in her home laundry room, bludgeoned to death. Colley suffered severe trauma to the head and face.

Following an extensive investigation, officials say Gomez beat the 83-year-old to death with a fire extinguisher.

After Colley’s death, Gomez fled to Guatemala and later Mexico, reports ABC 7. After Mexican authorities deported him, Gomez was arrested by the FBI in Miami.

Police believe Gomez had some type of financial dispute with the family.

Colley was the wife of millionaire Eugene Colley, who earned his fortune operating over 100 McDonald’s franchises in the New York area. Her son, Millbrook resident Bruce Colley, gained notoriety after he allegedly had an affair with Gov. Andrew Cuomo’s then-wife, Kerry Kennedy. The Kennedy/Colley relationship is believed to be the reason why Cuomo and Kennedy divorced.