Man Accused of Deadly Georgia Day Care Shooting Found Guilty in Retrial

— -- A former General Electric executive charged with murder after confessing to shooting a man outside a day care in 2010 was found guilty today by jurors in a Georgia courtroom, and sentenced later to life in prison, with no possibility of parole.

Hemy Neuman, an engineer, had admitted to shooting Rusty Sneiderman in cold blood outside of a Dunwoody, Georgia, day care center in 2010. Sneiderman, a father of two, was dropping his 2-year-old son at the day care when he was shot.

Prosecutors say Neuman had a premeditated plan to kill Sneiderman and was having an affair with Sneiderman’s wife, Andrea.

Neuman was convicted of malice murder and possession of a firearm during the commission of a felony, according to a statement released by the District Attorney's office.

Neuman claimed he was not guilty by reason of insanity. A jury in 2012 found Neuman guilty but mentally ill.

The Georgia Supreme Court overturned that conviction in June, ruling that Neuman’s mental health records should not have been part of the evidence.

In Neuman's second trial, a psychologist hired by Neuman's defense told jurors that she does not believe state mental health experts spent enough time with Neuman to properly diagnose him.

One of Neuman’s defense attorneys, Letitia Delan, claimed in court that her client had “undiagnosed and untreated bipolar disorder.”

Neuman’s attorneys also alleged that in the months before the shooting, Neuman, 48, believes he was visited by a demon with the voice of Barry White and an angel with the voice of Olivia Newton-John.

“You will come to the right verdict and that is that Hemy Neuman is not guilty by reason of insanity,” Delan told jurors in court.

Prosecutors argue that Neuman is not delusional but simply a “selfish” murderer.

“He wanted something that someone else had,” Robert James, Dekalb County district attorney, said in court. “He was going to do whatever it took to get it, including that, committing murder.”

Andrea Sneiderman, the victim’s wife, is out on parole after being convicted of perjury for lying under oath and obstruction of justice for lying to the police about the affair.

“Ms. Sneiderman had nothing to do with the murder of her husband,” Sneiderman’s attorney, J. Tom Morgan, told ABC News in a statement. “Mr. Neuman acted alone when he killed Rusty Sneiderman and he should be found guilty of murder and punished for his crime.”

The District Attorney’s Office and Neuman’s defense attorney both declined to comment to ABC News prior to the jury's verdict.