Ross Ulbricht told a federal judge on Monday that he will not testify in his own defense, revealing his decision after the government wrapped up its case against the alleged ringleader of the anonymous online drug bazaar called Silk Road.

Some legal experts have said putting Mr. Ulbricht on the witness stand would be a risky decision because it leaves him vulnerable to a tough cross-examination by government prosecutors. But he is allowed to change his mind on Tuesday as his defense team continues to put on its case.

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