
Staff found out that the office was sealed at 10am Moscow time (07:00 GMT) on Wednesday, the organization said in a statement.
A photo of the entrance to the office has been posted on the group's website.
Amnesty says it did not receive any warning from municipal officials and that the office was sealed in their absence.
City officials "changed the locks in the office and turned off the alarm, plus some wires are seen via the keyhole," the statement said.
The paper seal on the door of the office, placed there by the City Property Department of Moscow, reads: "The site is the property of a constituent unit of the Russian Federation." No one at the telephone numbers written on the note is answering, Amnesty says.
The organization says it has been paying rent regularly for 20 years.
Amnesty International, a London-based organization, is focused on human rights. Founded in 1961, it has over 7 million members and supporters worldwide.



Comment: Perhaps Russia is finally fed up with hosting a clearly biased Western-backed NGO?
- Dodgy Amnesty report claims Russian raids in Syria may amount to war crimes
- Hardly neutral: NGO's concealing crimes of the West while demonizing Russia
- Amnesty International: US State Department Propaganda Machine, Betrays Real Human Rights
- Amnesty International and Human Rights Watch publish biased report on eastern Ukraine, making them accomplices to human rights violations
UPDATE: Maybe the check was lost in the mail: