Tekashi69 was just turned away at the door trying to attend fight night in Long Island, and our sources say it's connected to a shooting months ago at the Barclays Center.
The rapper was stopped by security at the Nassau Coliseum in NY Saturday night as he was trying to make his way in for "Bellator 208: Fedor vs. Sonnen" ... sources close to the situation tell TMZ Sports.
We're told 6ix9ine planned to meet up with his pal and Bellator brand ambassador 50 Cent, but wasn't allowed entry.