MONTREAL -- The RCMP say their seizure of $56 million worth of cryptocurrency from an online platform is the largest in Canadian history.

The national police force says the exchange platform -- TradeOgre -- was used by criminal organizations to launder money.

They say their operation to shut down the website is the first time a Canadian police force has dismantled a cryptocurrency exchange.

Police say TradeOgre didn't require users to identify themselves and hid the source of its funds.