(Bloomberg) Martin-Artajo asked Judge Santiago Pedraz not to extradite him as the alleged events happened in the U.K. rather than the U.S. and because he has roots in Spain, according to a court official who briefed reporters today.

Answering a summons to appear at the National Court in Madrid, the former trader arrived with two lawyers.Javier Martin-Artajo, the former JPMorgan Chase banker accused of helping hide trading losses that eventually surpassed $6.2 billion, told a Spanish judge he opposes extradition to the U.S.

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