The FBI has released wanted posters for two European men recently indicted for conspiring to violate U.S. sanctions on North Korea, labeling them both as an “international flight risk.”

The publication of the posters followed the Department of Justice’s announcement of charges against Spanish aristocrat Alejandro Cao de Benos, head of the pro-DPRK Korea Friendship Association, and British cryptocurrency expert Christopher Emms on April 25.

The two men are accused of working with convictedAmerican crypto researcher Virgil Griffith to “illegally provide cryptocurrency and blockchain technology services to the DPRK” and face up to 20 years in prison each for