U.S. Loses Inside-Trade Suspect by Filing in Wrong Language (2)

The U.S. lost hold of a former investment banker wanted on insider-trading charges after it filed an extradition request for him in the wrong language.

Benjamin Taylor, 35, was arrested in Monaco and was being held pending the request, Monaco’s prosecutor Sylvie Petit-Leclair, said in a telephone interview. But a Monaco court rejected the request in May because it had been filed only in English, Petit-Leclair said.

The language of Monaco, a principality in the southeast corner of France, is French, and the country’s criminal code specifies that extradition requests must include a French translation. The U.S. filed an amended ...