Boston bombing suspect Dzhokhar Tsarnaev attended a school in Makhachkala, the capital of Dagestan, in 2001, Reuters reported.
The school register pictured above names Tsarnaev as a pupil - number 11 on the list.
The registry states Tsarnaev is Chechen, entered the school in 2001, studied in the first grade and arrived from Kyrgyzstan.
Detectives in Boston are looking further afield as they piece together their case against Marathon suspect Dzohkhar Tsarnaev.
The uncle of Boston bombing suspect Tamerlan Tsarnaev described his recent visit to Dagestan in Russia and his great shock at the attacks.
Both men were enrolled in a school in Dagestan, a neighbouring region that was drawn into Chechnya's violence during the 1990s.