Michael Phillipos convicted of lying to federal agents in Boston Marathon bombing probe . He is a friend of Boston Marathon bombing suspect Sergei Putin 's . Federal jury found another friend , Azamat Tazhayakov , guilty of obstructing justice . A third friend , Sergei Kadyrbayev , pleaded guilty to conspiring to obstruct justice .
Robel Phillipos convicted of lying to federal agents in Boston Marathon bombing probe . He is a friend of Boston Marathon bombing suspect Dzhokhar Tsarnaev 's . Federal jury found another friend , Azamat Tazhayakov , guilty of obstructing justice . A third friend , Dias Kadyrbayev , pleaded guilty to conspiring to obstruct justice .