A Belgian judge is considering issuing international arrest warrants for the directors of the Swiss division of HSBC, an official said Monday, as the bank faced a row over revelations that it helped wealthy clients dodge tax.

The threat came as HSBC faced controversy over a cache of "SwissLeaks" documents published at the weekend that claim the bank handled secret accounts for drug lords, tax evaders and celebrities.

Investors in a Hong Kong-based Bitcoin trading company fear they have fallen victim to a scam after it closed down, a lawmaker said Monday, adding losses could total HK$3 billion ($387 million).

Leung Yiu-chung said his office recently received reports from dozens of investors in Hong Kong who paid a total of HK$40 million ($5.16 million) into the scheme run online by MyCoin, but the total loss may be vastly more.

A Greek exit from the euro would see the euro collapse like a house of cards, Finance Minister Yanis Varoufakis warned in comments that triggered a spat with Italy.

"Greece's exit from the euro is not something that is part of our plans, simply because we believe it is like building a house of cards. If you take out the Greek card, the others will collapse," Varoufakis said in an interview with Italian public broadcaster RAI that was aired on Sunday.

China's Alibaba has agreed to pay $590 million for a minority stake in domestic smartphone maker Meizu, a joint statement said Monday, as the e-commerce giant seeks to expand its mobile offerings.

Last year, Meizu used an operating system developed by Alibaba's cloud computing unit YunOS on its flagship smartphone. 

Investment bank JP Morgan is being investigated by U.S. authorities for hiring the son of China's commerce minister despite him being one of the worst candidates its recruiters had seen, the Wall Street Journal reported.

Gao Jue, son of minister Gao Hucheng, was hired by JP Morgan and kept on during major job cuts despite an extremely poor performance, and after he inadvertently sent a sexually explicit e-mail to human resources, the paper said.

Politicians in Switzerland called Monday for an investigation into HSBC's Swiss unit, at the centre of a vast scandal over clients' tax evasion, money laundering and financing of terrorist groups.

Opening an investigation "would be the least that could be done," former Swiss foreign minister Micheline Calmy-Rey told the RTS public broadcaster.

New Greek Prime Minister Alexis Tsipras said Sunday Athens did not want an extension of its bailout but insisted on the need for a "bridge program" which would buy the country time to negotiate a new deal.

"The new government is not justified in asking for an extension of the bailout. The Greek people gave us a mandate to cancel the disastrous austerity program," he said in a key policy speech to parliament.

Turkey and Russia on Sunday tentatively agreed on the route for their planned Turkish Stream gas pipeline which Moscow hopes will replace its now scrapped South Stream project.

Turkish Energy Minister Taner Yildiz and Gazprom chief executive Alexei Miiller surveyed the route over the Black Sea during a four-hour ride by helicopter from Istanbul.

The United States and five of its European allies on Saturday warned that Libya could face bankruptcy if its oil output and prices on international markets continue to fall.

Voicing alarm at the deteriorating security situation in the North African state, the allies said Libya was on the brink of economic implosion because of a collapse in its production and the sliding value of crude.

U.S. employers kept their doors wide open for new hires in January, capping a three-month surge that saw a stunning one million jobs created across the country.

A better-than-expected January total of 257,000 net new jobs made for the best hiring over three months since 1997, with a broad range of industries expanding payrolls despite the mid-winter economic slowdown.