Another slump for Bitcoin over the weekend.
The volatile cryptocurrency fell to a two-week low.
Down 11.1% from Friday to $9,855 early Monday - its lowest price since the start of July.
Investors worried by the threat of a crackdown on crypto.
Polticians and financial regulators want close scrutiny of Facebook's planned Libra coin.
Last week U.S. Federal reserve Chairman Jerome Powell called for the tech giant to delay its project.
(SOUNDBITE) (English) FEDERAL RESERVE CHAIRMAN JEROME POWELL, SAYING:
"Libra raises many serious concerns regarding privacy, money laundering, consumer protection, and financial stability. These are concerns that should be thoroughly and publicly addressed before proceeding."
It's not just U.S. officials challenging Bitcoin.
Japanese authorities have set up a working group to look at Libra's potential impact on monetary policy and financial regulation.
ECB policymaker Benoit Coeure also due to deliver a report on the matter to G7 finance ministers in France this week.
All this after Bitcoin soared last month.
The price climbed almost 55% in nine days after Facebook revealed its plans for Libra on June 18th - touching an 18-month high of nearly $14,000.
Investors hoped Facebook's project would drive wider acceptance of cryptocurrencies.