The State Department is preparing to designate as “wrongfully detained” a Wall Street Journal reporter who was arrested by Russian security services last week during a reporting trip and accused of espionage, a designation that would rev up the U.S. government’s efforts to win his release.

With the official designation, supervision of Evan Gershkovich’s case would shift to a State Department section known as the Office of the Special Presidential Envoy for Hostage Affairs, which is focused on negotiating for the release of hostages and other Americans classified as wrongfully detained in foreign countries. The designation is expected as soon as this week, according to people familiar with the matter.