Now this is BIG: Major Crypto Exchanges Subpoenaed

Bitcoin and other cryptocurrencies flash-crashed Saturday night, one day after the US Commodity Future Trading Commission (CFTC) sent subpoenas four cryptocurrency exchanges in an ongoing probe into bitcoin manipulation that began in late July - following the launch of bitcoin futures on the CME, according to the Wall Street Journal.

Bitcoin Tumbles After Major Crypto Exchanges Subpoenaed For Manipulation, Coinrail Hacked

Bitcoin Tumbles Most in Two Weeks Amid South Korea Exchange Hack

Yahoo reports: Bitcoin extended losses for a third day, tumbling as much as 6 percent Sunday as South Korean cryptocurrency exchange Coinrail said there was a "cyber intrusion" in its system.