MOSCOW, Idaho.--KREM 2 News is learning more about the first murder in Moscow in two years.
Officials said the victim was a man trying to help his wife’s co-worker.
The fatal shooting happened at a mobile home on the North side of Moscow on Sunday afternoon.
Family members identified the victim as 42-year-old Charles McMichael.
WATCH: Moscow Police investigating fatal shooting
Police arrested 28-year-old Nathaniel Nisbet on first degree murder charges.
Moscow Police officers combed through the residence for hours. McMichael’s twin brother said he died while protecting the people he loved.
“He went out the same way he lived. Helping people. That's all he ever did,” said Robert McMichael.
Loved ones of McMichael said he was the rock of their family.
McMichael was helping a co-worker of his wife’s change the locks to keep her alleged abusive husband, Nisbet, out.
Nisbet was already there when McMichael arrived to her home.
Investigators said McMichael was shot multiple times. Robert McMichael said there is only one word to describe Nisbet.
“A monster is a guy who takes away the daddy of a little seven year old. A monster is a guy who preys on a woman. Monster,” said Robert McMichael.
Robert McMichael said he is now left picking up the pieces.
“I have to be there for my niece who expected her daddy to be around. Who gives her away at her wedding now? Me. Not her daddy,” said Robert McMichael.
He said he has a message for his brother’s accused killer.
“Coward. That's what he is. You're a coward Nate,” said Robert McMichael.
The McMichael family said they will be at Nisbet’s first court appearance on Tuesday. They said they will be at every hearing after that as well.