But rounding up the country's firearms would be a difficult task. Thousands of guns belonging to the police or the armed forces have gone missing from armouries, and while some were reportedly stolen, a 2005 audit found that many US and Australian-supplied firearms had been sold to criminal gangs. Others have ended up in the hands of warring tribes in Papua New Guinea's remote jungle regions. While tribal violence has been going on for decades, clashes which once involved homemade weapons are now fought with high-powered firearms.