Former U.S. Marine Robert Gilman, who is serving a long prison sentence in Russia, has been admitted to a hospital, Kommersant newspaper reported on Thursday.

The business daily quoted Gilman's lawyer as saying he was receiving treatment but that it was too early to talk about a diagnosis.

Reuters requested a comment from the ⁠U.S. State Department.

Gilman was first jailed in 2022 for assaulting a police officer while drunk, and ⁠his sentence was extended in 2024 following subsequent convictions for assaulting prison officials and a state investigator.

State media reported last December that he was facing a total sentence of 10 years after a further conviction for assaulting prison staff.

Gilman's supporters in the United States say he was ill when he was first arrested and that ⁠he was provoked while in prison into ⁠actions that led to the further charges.

Kommersant said that ⁠because ⁠of Gilman's unspecified illness, a court in the southern city of Voronezh had postponed a hearing into a prosecutor's appeal against the latest sentence.

A source close to the Kremlin told Reuters last year that Gilman was one of nine people on a list of Americans jailed in Russia that Washington wanted released and returned to the U.S.