A young man has pleaded guilty to murdering his father and half-brother in Hawera in January 15 July 2021 Nathan Frost has appeared at the High Court in Wellington this morning via audio-visual link from New Plymouth. The 21-year-old has admitted the double murder - of his 15-year-old half-brother, Regan Frost-Lawn, and 55-year-old father, Stephen Frost. He'll be sentenced next month.