Wall Street Journal reporter Evan Gershkovich went on trial behind closed doors in Yekaterinburg on Wednesday, 15 months after his arrest in the Russian city on espionage charges that he, his employer and the US government vehemently deny.

The 32-year-old journalist appeared in the court in a glass defendants’ cage, his head shaved and wearing a black-and-blue plaid shirt. A yellow padlock was attached to the cage. Journalists were allowed into the courtroom for a few minutes before the proceedings were closed. Also briefly permitted in court were two consular officers from the U.S. Embassy in Moscow, according to the embassy.