WASHINGTON - US basketball legend Kobe Bryant has died in a helicopter crash in California, sparking an outpouring of grief from fans around the world.

Bryant, 41, and his daughter Gianna, 13, were among the nine killed when the aircraft came down in Calabasas.

There were no survivors from Sunday's crash which happened in foggy weather.

Bryant, a five-time NBA champion, played for the LA Lakers throughout his career and is considered one of the greatest players in the game's history.

Tributes from celebrities, politicians and fellow sports stars have been pouring in, many expressing shock at his sudden death. Moments of silence have been observed at basketball games across the US.

Fans gathered at a makeshift memorial for Bryant in front of the Los Angeles Lakers' stadium at the Staples Center on Sunday, laying flowers and basketballs in memory of the star. ‎(FA)