A former U.S. Marine from Massachusetts who has been held in Russia for more than four years on disputed charges has been released. Robert Gilman's advocates announced the news Tuesday, days after warning he was gravely ill and at risk of dying. Gilman is a 32-year-old teacher who was detained since 2022. Gilman is on his way to a U.S. military hospital in Texas. That's according to Global Reach, a group that’s been working to free him and other American detainees abroad. Gilman’s sister credits President Donald Trump and U.S. Sen. Ed Markey with bringing about his release. The State Department says Gilman was wrongfully detained and was released on humanitarian grounds.