With the prime minister set to unveil new anti-gang legislation, CTV News has learned that a B.C. police force believes a federal government employee may have been leaking confidential information to known B.C. gangsters.

The alleged leaker is believed to have been feeding information to rivals of the United Nations Gang, which police call one of the most powerful criminal organizations on the West Coast.

Throughout the last year, the United Nations Gang has found itself under siege, with members being killed off in an escalating gang war.

In sworn testimony last October, retired RCMP inspector Mike Ryan of the Organized Crime Agency of B.C. answered "yes" when asked if police suspected that a Canadian Revenue Agency employee had been leaking information on behalf of rivals of the United Nations Gang.

He said the information came from municipal police. It is believed the alleged leak took place in late 2007.

"My understanding is that the Abbotsford police department learned that there has been a breach of security," he said.

Police would not comment on the revelation and the CRA did not return calls on this story. It is unknown if the leak actually occurred or has been plugged.

Ujjal Dosanjh, the Liberal MP for Vancouver South, called the explosive revelation "frightening." In his opinion, there is a risk that "organized crime is spreading its tentacles into institutions such as the CRA."

However, none of these allegations have been proven in court.

Simon Fraser University criminologist Rob Gordon said there are several bits of tax information gang members might be interested in, such as home or work addresses.

"So that could well be used to target individuals into organized hits," he told CTV News.

There have been at least six gang murders in the last six weeks in the Vancouver-area.

As their name suggests, the United Nations Gang is made up from members of many ethnicities. Gang members are known to be Persian, Asian and Caucasian. They may sport dragon tattoos, garish jewellery and designer hoodies.

Gang members have been brazen enough to carve their insignia on to their tombstones and the logo is also been known to be stamped on cocaine that it ships.

With a report from CTV's Rob Brown and Jon Woodward in Vancouver