SAN FRANCISCO (CBS/AP) — An Internet entrepreneur accused of being behind an online marketplace for illegal drugs has asked the government to return more than $30 million in bitcoin seized from his computers.

Ross Ulbricht, of San Francisco, was arrested in October following a crackdown on the black market website Silk Road.

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Federal prosecutors in New York say Ulbricht went by the online handle, “the Dread Pirate Roberts,” and turned the underground site into a place where anonymous users could buy or sell all sorts of contraband and illegal services.

In court filings, prosecutors said they seized 144,336 bitcoins from Ulbricht’s computers.

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The virtual currency is exceedingly valuable, but lightly regulated.

Ulbricht said in a legal filing on Dec. that the currency should be returned because it isn’t subject to civil forfeiture rules.

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