GIFFORD - A Gifford man who died Monday of a gunshot wound was shot by his father, according to Hardin County Sheriff Timothy Smith.

The victim, Joshua Tremmel, 31, lived with his father, Larry Tremmel, 64.

An argument between the two men began Monday morning and escalated in violence, resulting in Larry Tremmel retreating to another room in the home and getting a handgun, Smith said.

As the argument escalated, Larry Tremmel allegedly fired one shot, striking his son in the chest.

Joshua Tremmel is not believed to have been armed at the time of the shooting, according to Smith.

Larry Tremmel called 911, requesting the sheriff and an ambulance. He reported that he had just shot his son.

When deputies arrived, he cooperated and was taken to the sheriff's office for questioning, Smith said.

In an interview with law enforcement officials, he said he was afraid his son was going to kill him, according to Smith.

He was released to members of his family following questioning.

Joshua Tremmel was taken by Eldora Ambulance to Ellsworth Hospital in Iowa Falls, where he was pronounced dead.

His body was taken to the State Medical Examiners Office in Ankeny for an autopsy.

The sheriff's office and the Iowa Division of Criminal Investigation are continuing the investigation, according to Smith. He said investigative reports will be forwarded to Hardin County Attorney Randall Tilton for review regarding criminal charges.