A Reno woman is facing life imprisonment for killing a man over a child custody dispute, according to the Washoe County District Attorney’s Office.

Katherine Fletcher, 40, was convicted of first-degree murder with a deadly weapon in late January.

She was convicted for shooting and killing Robert Trask on July 28, 2016, officials said in a news release.

Trask was found unresponsive on the observation deck at Oxbow Nature Park with a single gunshot wound to his upper back, officials said. He was transported to Renown Regional Medical Center, where he died.

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Detectives found a single shell casing a few feet from the shooting. They then interviewed a witness who heard the gunshot and saw a woman fleeing the scene with a young boy.

Fletcher was identified as the suspect. Detectives also learned that she was involved in a custody dispute.

On the night of the shooting, Fletcher met with Trask at the park. After nearly an hour, she shot the victim in the back in front of her 8-year-old son.

During a police interview, Fletcher denied shooting the victim and claimed she didn’t know how he was shot. Meanwhile, the boy told detectives that his mother claimed a man shot Trask from nearby bushes.

Detectives later learned Fletcher had previously purchased a pistol and went target shooting in the weeks before the murder.

Still, investigators were never able to find the gun.

Fletcher had prior convictions for child neglect and for burglary. She also claimed Trask had abused her to regain custody rights.

At her week-long jury trial, Deputy District Attorney Amos Stege argued the murder was premeditated. He said Fletcher shot Trask because she lost her custody rights.

The boy also testified in the trial.

Fletcher is set for a sentencing hearing on April 9 at the Washoe County District Court.

She faces life imprisonment without the possibility of parole and an additional 20 years for the firearm enhancement.

Marcella Corona is a breaking news reporter who covers crime and justice in Northern Nevada. Support her work by subscribing to RGJ.com.