In the past two sessions, there was a sharp rise in selling on bitcoin below the USD 7,200 support. As a result, BTC/USD declined heavily and broke the main USD 7,000 support area. It tested the USD 6,850 support and is currently (09:00 UTC) consolidating losses.
Also, there was a nasty decline in most major altcoins, including ethereum, XRP, bitcoin cash, litecoin, EOS, BNB, ADA, TRX and XLM.