A special enforcement unit, which investigates organized crime in British Columbia, says it is conducting its own probe into the activities of Clayton Roueche and the United Nationa (UN) gang.

Sgt. Bill Whalen, of the Combined Forces Special Enforcement Unit, said The RCMP searched Roueches's Coquitlam, B.C., condominium on May 17, just two days before he was arrested in Texas.

During that sweep, police seized several items, but investigators will not reveal what they took.

According to documents released Friday by Washington State authorities, police in the United States have also been watching the UN, and Roueche -- the B.C. gang's alleged leader -- for the last five years.

An October 2007 indictment obtained by CTV indicates that Roueche is charged, along with others, of conspiring to export through the United States, five kilograms or more of a substance containing a detectable amount of cocaine.

He is also charged with money laundering and conspiring with others to import into the U.S. 1,000 kilograms of marijuana.

None of these allegations have been tested in court.

Following Roueche's arrest last week, American authorities revealed there are now warrants outstanding for eight others --including two men who are alleged to be Roueche's closest allies -- who are also facing drug charges. The warrant names Doug Vanalstine and Daniel Russell.

Roueche is expected to be flown back to Seattle soon to answer to the charges.

with a report by CTV British Columbia's Lisa Rossington