FAIRBANKS — A man charged with first-degree murder in the Yukon River village of Koyukuk told investigators he acted in self-defense.

The Fairbanks Daily News-Miner reports 27-year-old Conrad Jones is charged in the fatal shooting Tuesday night of 46-year-old Gene Mayfield, his mother’s boyfriend.

Koyukuk is a village of 90 about 290 miles west of Fairbanks.

Alaska State Troopers were notified of Mayfield's death Wednesday afternoon and flew to the village.

According to a criminal complaint, Jones told troopers that he and Mayfield didn't get along and the older man had been harassing him. Jones said Mayfield came at him with a knife and a gun and he shot the older man.