MOSCOW (AP) — A U.S. citizen arrested on drug charges in Moscow amid soaring Russia-U.S. tensions appeared in court on Thursday and had his case adjourned until mid-May.

Robert Woodland is facing charges of trafficking large amounts of illegal drugs as part of an organized group — a criminal offense punishable by up to 20 years in prison. He was remanded into custody in January, and the trial began in the Ostankino District Court in late March.

“Our position is that there is, I may say, no evidence of drug sales in the materials on the case,” his lawyer Stanislav Kshevitskii told reporters.

The court set his next hearing date to May 14.

In January, the U.S. State Department said it was aware of reports of the recent detention of a U.S. citizen and noted that it “has no greater priority than the safety and security of U.S. citizens overseas,” but refrained from further comment, citing privacy considerations. The U.S. Embassy in Moscow issued a similar statement at the time.