Bitcoin company CoinLab Inc. has thrown its support behind Japanese bitcoin exchange Mt. Gox's U.S. bankruptcy case, a change of course for CoinLab, which has sued Mt. Gox for $75 million.

Lawyers for CoinLab said in court papers Friday that they wouldn't object to Mt. Gox's formal request for U.S. bankruptcy protection, despite earlier hints that they might challenge that request. Court documents offered no explanation for CoinLab's decision.

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