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.

Takeshi Ebisawa, a high-ranking Yakuza member, has pleaded guilty in a New York court to trafficking weapons-grade nuclear materials, narcotics, and heavy weaponry as part of an international conspiracy.

Takeshi Ebisawa pleaded guilty to conspiring to traffic nuclear materials, including uranium and weapons-grade plutonium, to other countries, U.S. officials said.