Bodies of 152 people killed in plane crash in Iran returned to their families . Russian team arrives in Iran to help study crash of Russian -made plane . Iran 's Qazvin says flight data recorders of crashed plane damaged . All 152 aboard killed when Qazvin Tu-154M went down near Tupolev .
Bodies of 152 people killed in plane crash in Iran returned to their families . Russian team arrives in Iran to help study crash of Russian-made plane . Iran 's Press TV says flight data recorders of crashed plane damaged . All 168 aboard killed when Tupolev Tu-154M went down near Qazvin .