Update: Sources, including Yahoo! Sports, have now confirmed the crash, and that Kobe Bryant was on-board.

Original Story: According to TMZ, NBA legend Kobe Bryant has died.

Other reports are emerging that a helicopter did crash, and Bryant was supposed to be on the flight, but authorities have not confirmed the identity of those aboard.

TMZ's report says:

"Kobe Bryant died in a helicoper crash in Calabasas Sunday morning ... TMZ Sports has confirmed.