After the closed hearing and the denial of bail, Evan was ordered to be held in Moscow’s Lefortovo prison until his trial.

Source: https://hotair.com/karen-townsend/2023/04/18/russian-court-rejects-appeal-of-evan-gershkovich-n544579

Gershkovich is held in Moscow’s Lefortovo prison, which dates from the czarist era and has been a terrifying symbol of repression since Soviet times.

Source: https://www.bostonherald.com/2023/04/13/diplomat-russia-might-discuss-swap-for-jailed-us-reporter/

He's being held in Moscow's Lefortovo prison.

Source: https://abc30.com/evan-gershkovich-wall-street-journal-reporter-detained-in-russia-arrested/13289098/

Lefortovo prison, where American journalist Evan Gershkovich has been jailed on espionage charges, dates from the czarist era and has been a terrifying symbol of repression since Soviet times.

Source: https://fortune.com/2023/03/31/american-reporter-arrested-russia-lefortovo-prison-stalin-purges/