Former US Marine Robert Gilman has been released from detention in Russia on humanitarian grounds, the US State Department said on Tuesday, stressing that “no concessions were made” in securing his return.

“We are pleased to welcome Robert Gilman back to the United States,” a State Department spokesperson said in an email.

The spokesperson said Gilman’s release was “not part of a swap” and that no other concessions had been made in exchange for his freedom.

Gilman was sentenced in 2022 by a court in southwestern Russia to four and a half years in prison after being convicted of assaulting a police officer. His sentence was later extended to 10 years following a conviction for violence against prison staff.

The State Department recently designated Gilman as “unjustly detained” in Russia.

His sister, Lexi Hudson, had previously called for his release, citing a serious deterioration in his health and urging the US authorities to secure his return.

The State Department said the administration would continue efforts to secure the release of other Americans it considers to be wrongfully detained in Russia.

Among them is Stephen Hubbard, a retired English professor who was sentenced in a closed court in October 2024 to almost seven years in prison after being convicted of serving as a mercenary for Ukraine.

Hubbard denied the charge.

The State Department described Hubbard as a victim of “illegal detention” as it renewed its commitment to securing the release of Americans held in Russia.