A former U.S. Marine detained in Russia is at risk of dying in custody, according to his family and an advocacy group, which said he had been mistreated and was in serious condition in a civilian hospital. Mr. Gilman’s condition was first reported by Reuters on Thursday. Mr. Gilman was being fed through a tube, was running a high fever and had hypertension, Mr. Lebson said in an interview on Friday. Mr. Gilman’s family asked the State Department in 2023 to designate him as a wrongful detainee, which would allow the U.S. government to negotiate for Mr. Gilman’s release, his sister said. The post Family of Former U.S. Marine Detained in Russia Says He Is in Serious Condition appeared first on New York Times.