American citizen and former U.S. Marine Robert Gilman has been released by Russia on humanitarian grounds after more than four years in detention, U.S. officials confirmed Tuesday.

President Trump announced the release on Truth Social. “I am proud to announce that American Citizen Robert Gilman, a former United States Marine, is coming HOME!” Trump wrote, adding that Gilman would land at Andrews Air Force Base in Washington, D.C. Tuesday night, where U.S. representatives, some of whom are traveling with him on the plane, will welcome him back.

Gilman, 32, of Lowell, Massachusetts, was arrested in Voronezh, Russia in January 2022 and later sentenced to prison on charges relating to an altercation with a police officer, allegations his family has disputed. Advocates said Gilman had been subjected to abusive treatment in custody and was recently found to be in a “dissociative stupor” — a catatonic, non-responsive state — after being moved to a civilian hospital in June.

A U.S. State Department spokesperson confirmed the release was carried out purely on humanitarian grounds, “not part of an exchange,” with no other concessions provided by the United States. Trump said he had personally discussed the release with Russian President Vladimir Putin.

Gilman is now en route to the U.S. on a State Department plane, escorted by American personnel, and is expected to continue on to a military hospital in Texas for medical evaluation and treatment. A U.S. official said Gilman was walking and talking following his release.