Police in Papua New Guinea have fired shots and tear gas to disperse a rioting crowd in the Pacific Island nation's capital of Port Moresby.
The firing took place on Monday after hundreds of people took to the streets after a fatal stabbing over the weekend fuelled tribal tensions.
The crowds of rival Wanigela and Goilala clans blocked roads, burned tyres and hurled rocks at the seaside Koki market on Monday.
Unconfirmed reports said that a man died from a gunshot wound and several others were injured.
One agency quoted a Wanigela member as saying that the man died from loss of blood after being attacked by a drunken group of men at the market.
The area around Port Moresby's Koki market is known as a flashpoint for clans and youth gangs from around Papua New Guinea - a country with more than 700 languages and where people hold strong village and clan loyalties.
The Wanigelas and Goilalas have clashed around Port Moresby for years.
Police at the scene said warning shots were fired, but a media officer at police headquarters said reports of three or four people being hit by police bullets were being investigated.
After the confrontation, senior police officers and Wanigela leaders addressed the crowd and appealed for calm.
a tribal member said: "As soon as we heard, we mobilised and blocked the roads and burned tyres."
He said the Wanigelas wanted the Goilalas to hand over the alleged killer and pay compensation.