Russian officials did not disclose to the US text messages that suggested that Boston Marathon bombing suspect Tamerlan Tsarnaev was interested in joining militant groups, according to a report in the Wall Street Journal.
Russia alerted federal investigators in 2011 about Tsarnaev, 26, in part due to text messages between his mother and a Russian relative, the report said. Unnamed US officials who spoke to the newspaper said Tsarnaev wanted to join a militant group that Russia blames for attacks in the Caucasus region.
Tsarnaev died last month following a gun battle with police and has been buried in Virginia. His brother, Dzokhar Tsarnaev, 19, has been charged with using a weapon of mass destruction and malicious destruction of property resulting in death.