Tualai Sili Lu'uga admitted killing Vaepa'a Seiuli at his house at Afulilo, on Upolu.
The Samoa Observer reported that a fight broke out between Mr Seiuli and his brother, and Lu'uga intervened.
Lu'uga told police he was punched multiple times by Mr Seiuli, who threatened to kill him with a machete.
When the machete was brandished, he said he ran to his house to get weapons before going to Mr Seuili's house to stab him multiple times.
Source:
RNZ Pacific