The purported leader of a Japan-based crime syndicate has pleaded guilty to charges alleging that he conspired to traffic uranium and plutonium from Myanmar in the belief that Iran would use it for nuclear weapons.

A leader of Japan's Yakuza crime syndicate who tried to sell Iran weapons-grade plutonium has pleaded guilty to charges of trafficking narcotics, weapons and nuclear material.

An alleged leader from Japan’s Yakuza crime syndicate has pleaded guilty to trafficking nuclear materials from Myanmar as part of a global web of trades in drugs, weapons and laundered cash, according to the US Department of Justice.