Frazier Glenn Miller at the Johnson County District Court in Olathe, Kan. (Joe Ledford/Kansas City Star via AP)

The 74-year-old white supremacist who gunned down three people during an anti-Semitic shooting spree near Kansas City last year was formally sentenced to death Tuesday.

A jury in Kansas had already recommended a death sentence for Frazier Glenn Miller Jr. after an unusual trial that saw Miller, who acted as his own attorney, disrupting the proceedings, making periodic outbursts and, as the jurors left to deliberate, standing up, saying “Sig heil” and delivering a Nazi salute.

Miller, who is also known as Frazier Glenn Cross, was convicted of the April 2014 shooting deaths of William Corporon, 69; his grandson, Reat Underwood, 14; and Terri LaManno, 53.

Corporon and Underwood were killed outside the Jewish Community Center in Overland Park, Kan., and LaManno was killed in the parking lot of Village Shalom, a nearby retirement center. While Miller was motivated by a stated hatred of Jews, none of the people killed were Jewish.

[The strange trial of the avowed anti-Semite and white supremacist charged in the Kansas City JCC killings]

During the trial, Miller argued when a prosecutor said he had intended to “kill as many people as possible” during the shooting spree.”

“I wanted to kill Jews, not people,” Miller said.

During the trial’s closing arguments, Steve Howe, the prosecutor, said that Miller’s actions “clearly are the type of case the death penalty is made for.”

[Jury convicts avowed white supremacist in fatal shootings near Kansas City JCC]

On Tuesday, two months after the jurors quickly agreed he should be executed rather than punished with life without parole, the judge overseeing the trial handed down the sentence.

Miller was also sentenced to a combined 394 months on three counts of attempted first-degree murder, aggravated assault and discharging a firearm into an occupied building, the Kansas City Star reported.

Relatives of the victims spoke in court before the sentencing, according to Reuters. William Corporon’s son, Will, looked at Miller and said: “You are a coward.”

After he was sentenced, Miller again hailed Hitler and, on his way out, said: “One day my spirit will rise from the grave and you’ll know I was right. I’m a happy man.”

Miller has a long history of racism and anti-Semitism, and had been the “grand dragon” of the Carolina Knights of the Ku Klux Klan, according to the Southern Poverty Law Center, which tracks hate groups.

In Kansas, executions are meant to be carried out by lethal injection. The state reinstated the death penalty in 1994, but it has not executed an inmate since the U.S. Supreme Court reinstated the death penalty in 1976, according to the Death Penalty Information Center.

Related:

‘I know they’re in heaven together’: Kansas City mourned the victims

Most Americans support the death penalty, though they agree that an innocent person might get put to death.