The fight exploded behind the fresh market in Thalang Town just before 3am, with Boonphak Galayapan, 24, being left bleeding on the road while his attacker fled.
The victim’s mother, Wan Boonrod, told police that the attacker was the nephew of her new husband. She knew the nephew only as Khiew.
“Khiew asked to borrow some money to buy booze and he got very upset when I refused to loan it him because he had already borrowed B500 and hadn’t repaid it.
“He got into argument with my son about it. Khiew then chased my son around with the knife and stabbed him before fleeing,” Mrs Wan said.
Thalang police are now looking for Khiew.