A police raid on an alleged music piracy operation in Winnipeg, Manitoba has resulted in what the Canadian record business claims is the largest counterfeit bust in Canadian history.

According to the Canadian Recording Industry Association, a firmcalled Audiomaxx was raided by officers from the Royal Canadian Mounted Police. Seized goods included more than 200,000 music CDs and DVDs, numerous movie DVDs and hundreds of thousands of blank discs.

The operation was said to have the ability of producing up to 11,500 CDs per day. Counterfeit copies of albums by artists including Shania Twain, Lionel Richie, Jay-Z, Mary J. Blige and Nelly Furtado were taken as evidence during this week's raid.

The RCMP said Audiomaxx was "operating a sophisticated commercial operation in the manufacturing and distribution of pirated compact discs, DVDs and most recently in the unauthorised supply of digital downloads throughout North and Central America, Europe and the Caribbean."

According to Graham Henderson, President of the Canadian Recording Industry Association, the arrests send a clear signal that music counterfeiting will not be tolerated in Canada.

"We sincerely thank the RCMP officers who have worked so hard to bring Audiomaxxx to heel, and to the federal prosecutors who have worked closely with them," he says.

Four people involved with Audiomaxx, all from Winnipeg, were arrested and released either on promises to appear or pending further investigation.