Skip to content
City PM
  • Germany
  • France
  • Europe
  • Markets
  • Business
  • Opinion
  • DE
  • Germany
  • France
  • Europe
  • Markets
  • Business
  • Opinion
  • DE
Saturday 01 August 2015 11:30 am

Mark Karpeles: Head of bitcoin exchange Mt. Gox arrested in Tokyo on suspicion of manipulating data

By: Joe Hall

Add as a preferred source on Google

The chief executive of bankrupt bitcoin exchange Mt. Gox has been arrested by Japanese police on suspicion fiddling with transaction data to inflate the balance in an account under his control.

Read more: Why the end of MtGox is great news for Bitcoin

Mark Karpeles is being held in Tokyo for allegedly manipulating transaction records on Mt. Gox's system to falsely add $1m (£640m) into an account held under his name.

In a statement the Tokyo police said: "He [Karpeles] created false information that $1m had been transferred into the account, when in fact it had not been."

The 30-year-old French national was head of Mt. Gox – once bitcoin's biggest exchange – when it went bankrupt last year after losing over 850,000 bitcoin (200,000 were later recovered) worth more than $450m (£288m) due to malfunctions in its software.

At the time that amounted to over seven per cent of the cryptocurrency in existence.

Karpeles has not yet been formally charged with a crime.

Share this article

  • Facebook
  • X
  • LinkedIn
  • WhatsApp
  • Email

Similarly tagged content:

Sections

  • News

Categories

  • Tech

Related Topics

  • Bitcoin and blockchain

Trending Articles

  • Government accelerates social media crackdown with midnight curfews

  • Bank of England governor opens door to ‘simplifying’ financial rulebook

  • First Trust Global Portfolios Management Limited Announces Distribution for certain sub-funds of First Trust Global Funds ICAV

  • Alkermes to Report Second Quarter Financial Results on July 28, 2026

  • Clyde and Honour look keys to crack Hackwood

More from City PM

  • ‘Banker’ arrested in connection with ‘Putney pusher’ attack

    London
    Person pushing another individual off a Putney bridge, capturing the infamous incident known as the Putney Pusher事件
  • Options Expands Middle East Footprint with Abu Dhabi Securities Exchange (ADX) Feed Onboarding

    Business Wire
  • Options Technology Offers Immediate Access to the Texas Stock Exchange (TXSE)

    Business Wire
  • KBRA Relocates to Expanded London Offices to Support Growth

    Business Wire
  • Ticket reseller StubHub UK fined nearly £1m for hiding fees

    Retail
    Aerial view of Glastonbury Festival showcasing vibrant crowds, colorful tents, and iconic Pyramid Stage under clear skies
  • City law firm Shoosmiths invests extra £1m in firm’s bonus pot

    Legal
    Business professionals in formal attire engaged in a lively discussion at a corporate meeting in a modern office setting.
  • Heatwave fans demand for aircon stocks

    Investing
  • Apple memory chip warning causes fresh Asia tech sell-off

    Markets
    Apple App Store with UK flag and warning sign about potential scams due to proposed CMA competition reforms

City PM — European politics, business and analysis.

Europe

  • Germany
  • France
  • Europe
  • UK & Ireland

Topics

  • Business
  • Markets
  • AI
  • Technology
  • Opinion
  • Energy

More

  • Politics
  • Economics
  • Fintech
  • Legal
  • Sport
  • Life

Company

  • About City PM
  • Editorial Policy
  • Corrections
  • Contact
  • Terms of Use
  • Privacy Policy
  • Cookie Policy
© 2026 City PM · Published by CityPM Media, Bahnhofstrasse 65, 8001 Zürich, Switzerland
About · Editorial Policy · Corrections · Contact · Privacy · Facebook