TMZ: Multiple sources tell TMZ, Tiffany Haddish has told multiple people the culprit is Sanaa Lathan. One source said it was not an aggressive bite ... it was playful and noninvasive, but still caught Beyonce off guard.
Sanaa has denied ever biting Beyonce in her recent tweet.
The incident was in December, at an after-party for Jay-Z's 4:44 concert.
See more of this story via TMZ.