However a letter intercepted by the American military in January 2007 revealed the two groups had begun feuding .
The kidnappers on the video identified themselves as members of al - Tawhid wal Jihad ( Source : MERIA ) .
A letter intercepted by the American military in January 2007 revealed the two groups had begun feuding .
The kidnappers on the video identified themselves as members of al - Tawhid wal Jihad ( Source : MERIA ) .