FSB memorandum regarding Tamerlan Tsarnaev and Zubeidat Tsarnaeva

A report passage read by Petri stated that the FBI's Moscow legal attaché received the Russian-language memorandum in March 2011. According to the English translation used by the FBI, the memorandum alleged radical Islamic adherence and planned travel by Tamerlan to join unspecified underground groups; Russian authorities also requested information about the two individuals.