One of two men shot by their father in Blount County Thursday night has now died.

The shooting happened Thursday night in Hayden and is one of two deadly domestic-related slayings in Blount County in just 24 hours. On Wednesday, a 28-year-old man was shot to death after authorities say he attacked his grandmother while she was helping him set up to camp out.

Blount County Sheriff's Office Operations Commander Tim Kent said the Thursday night shooting happened off Elvester Road. The father was trying to commit suicide and a struggle over the gun ensued between him and one of his sons. The sons are ages 21 and 23.

The gun discharged, Kent said, and struck one of the sons in the hand. The bullet then passed through his hand and struck his brother in the chest.

Both brothers were taken to UAB Hospital in Birmingham where one of them died early Friday. The fatality victim's name is not yet being released.

The father was detained for questioning. The investigation is ongoing and, once concluded, will be presented to the Blount County District Attorney's Office for review of possible charges.

In Wednesday's incident, Kent said a 66-year-old woman was helping her grandson while he was camping on Adams Road in Blountsville. It's unclear what happened, but the grandson attacked his grandmother and she shot and killed him. They are not yet releasing the names of the slain grandson or his grandmother.

Kent said they will take evidence in that case to a Blount County grand jury.