Five Papua New Guineans have been hacked to death, with one of them beheaded, after a four day fight sparked by the theft of a mobile phone.
The fight in the capital Port Moresby started at a popular market on Thursday afternoon but retaliations continued until Sunday.
Police have told both national newspapers five men are dead from brutal bush knife attacks with scores of others injured and in hospital with knife wounds.
Police say the fight erupted when a woman had her mobile phone stolen at the busy Gordon's market and fellow tribesmen who came to her aid attacked the thief.
The following day relatives of the alleged thief attacked the rival group reportedly hacking a man to death with bush knives.
The tribal groups involved were from Tari and Enga provinces.