A United Nations inquiry has confirmed that a Pakistani peacekeeper in the Democratic Republic of Congo was involved in smuggling gold.
Pakistan is the largest contributor to the UN peacekeeping effort
A Pakistani contingent was accused of selling gold and guns between 2005 and 2006 to Congolese militia groups they were meant to disarm.
The investigation, which began in early 2006, found no evidence of gun-running.
Pakistani officials have previously denied all the accusations, describing the allegations as "baseless".
In May the UN said it would seek to discipline anyone who had compromised peacekeeping in DR Congo by trafficking in gold or guns.
Now the head of UN peacekeeping, Jean-Marie Guehenno, has told the BBC: "The investigation has found no evidence of gun smuggling but it has identified an individual who seems to have facilitated gold smuggling.
"We have shared the report with the concerned troop contributor and I'm confident they will take the required action. This issue is closed."
This is the latest in a series of scandals involving UN peacekeepers.
Mr Guehenno said he thought UN peacekeeping was overstretched, with 100,000 peacekeepers in the field but a support staff of just 1,000 at headquarters.
That was a factor in continuing problems with discipline, he added.
The BBC's UN correspondent, Laura Trevelyan, says that although the UN can send misbehaving peacekeepers home, the countries that provide the troops are responsible for their conduct.
The Pakistani battalion at the centre of the claims was based in and around the mining town of Mongbwalu, in the north-east of the country, in 2005.
They helped bring peace to an area that had previously seen bitter fighting between the Lendu and Hema ethnic groups.
But witnesses said Pakistani officers had also supplied weapons to notorious militia commanders in return for gold.
As the trade developed, the officers brought in the Congolese army and then Indian traders from Kenya.
The UN began a major investigation after being alerted by Human Rights Watch in late 2005.
A UN official connected with the inquiry has previously told the BBC there seemed to have been a plan to bury the results, in order to avoid alienating Pakistan - the largest contributor of troops to the UN.