Fog likely to feature prominently in probe of Kobe Bryant's fatal helicopter crash

Overcast skies and fog reported at the scene of the helicopter crash that killed former NBA superstar Kobe Bryant, his daughter and seven others appear likely to become a key focus of aviation experts investigating the weekend tragedy near Los Angeles.

A Sikorsky S-76 chopper owned by Bryant slammed into a steep hillside on Sunday morning outside the town of Calabasas, California, about 40 miles (65 km) northwest of downtown Los Angeles, igniting a brush fire and spreading debris over a quarter-acre of grassy terrain.