The Diary of Amsterdam (Netherlands) De Telegraaf said that a total of ten twentysomethings Dutch nationals have been arrested for an alleged scam with virtual currencies. The detained by the authorities would have used the bitcoin digital currency to whiten up to 20 million euros of money from selling drugs online. In a statement prosecutors say that agents have seized luxury cars, cash, bank accounts and other assets abroad as an unspecified amount of bitcoins in cooperation with authorities in the US, Australia, Lithuania and Morocco.
The Bitcoin is the preferred means of payment because these sites can be transferred quickly between users of any country without using a bank and making it difficult to trace.
According Hoen, a judge in Rotterdam decide on Friday about the detention of detainees. The spokesman also indicated that drug dealers were the subject of an investigation of the drug unit in the country and records on Tuesday, 15 kilos of chemical precursors were found to manufacture ecstasy. "De Telegraaf", which was invited to witness the records in which participated 250 police officers, has reported that the men were arrested because large amounts of money is often deposited in their accounts and then were quickly withdrawn cash at ATMs automatic.
Bitcoin also has a public ledger, which means it's not really an ideal vehicle for money laundering. There are better cryptos out there for that kind of purpose.
According to Wikipedia's article on Bitcoin money laundering, "A report by UK's Treasury and Home Office named "UK national risk assessment of money laundering and terrorist financing" (2015 October) found that, of the twelve methods examined in the report, bitcoin carries the lowest risk of being used for money laundering, with the most common money laundering method being the banks.[326]"
If you really want to launder money, just talk to HSBC. :)