Black Box May Hold Clues to Russian Plane Crash 

Search teams have recovered the black box filled with data from the Russian plane that crashed Sunday killing all 92 people aboard. 

The plane went down over the Black Sea, just two minutes after takeoff from Sochi, in southern Russia. 

Investigators have yet to analyze recordings from the box, but at this point they say the crash does not appear to be terrorism.  Pilot error or a technical fault were likely to have caused the crash, Russian Transport Minister Maxim Sokolov said in a statement.  

However, terrorism has not been completely ruled out based on the crew's failure to report any malfunction and the fact that plane debris was scattered over a wide area.

Meanwhile, people are leaving tributes at a memorial in Moscow.  The nation held a day of mourning Monday for the victims. Flags flew at half-staff, and TV stations removed entertainment shows from their schedules.The victims include dozens of singers in Russia's world-famous military choir, 9 Russian journalists and a Russian doctor known for her charity work in war zones.