Staff found the office was sealed around 10:00 am (07:00 GMT). The organization had not received any warning and the premises was sealed in their absence,” the rights group wrote on its website.
The global human rights campaign group said that the locks had been changed and the alarm system switched off in the premises, which is its only office in Russia.
Amnesty International regularly criticizes Russian authorities for overly harsh treatment of prisoners and urges the release of those jailed in cases it views as politically motivated.
Most recently on Tuesday it urged the authorities to “end the pattern of impunity for torture and other ill treatment” after Russian activist Ildar Dadin, jailed for solo anti-Kremlin protests in Moscow, said he had been beaten and threatened in jail.
John Dalhuisen, the group’s Europe director, said in a statement: “We do not know what prompted Moscow authorities to prevent our staff from accessing our offices — an unwelcome surprise for which we received no prior warning.”
SOURCE: The Times Of Israel