Joshua Allen -- the winner of "So You Think You Can Dance" Season 4 -- has died.
A family member tells TMZ he died on Sept. 30 but declined to share how he passed. The family member asks fans for "privacy and prayers."
His years-long friend in the dance community, Emmanuel Hurd, tells TMZ he is shocked by his death and remembers him as "a very honest, real person" who would tell you his own flaws.