President Trump just tweeted about Kobe's death ... saying, "Reports are that basketball great Kobe Bryant and three others have been killed in a helicopter crash in California. That is terrible news!"
12:35 PM PT -- Kobe's daughter Gianna Maria Onore -- aka GiGi -- was also on board the helicopter and died in the crash ... reps for Kobe tell TMZ Sports. She was 13.
We're told they were on their way to the Mamba Academy for a basketball practice when the crash occurred. The Academy is in nearby Thousand Oaks.
Kobe Bryant died in a helicoper crash in Calabasas Sunday morning ... TMZ Sports has confirmed.
Kobe was traveling with at least 3 other people in his private helicopter when it went down. A fire broke out. Emergency personnel responded, but nobody on board survived. 5 people are confirmed dead. We're told Vanessa Bryant was not among those on board.