BREAKING NEWS - Halle Berry Custody Battle Sparks Fist Fight Between Olivier Martinez And Gabriel Aubry, Both Men Injured

Gabriel Aubry was taken to the hospital with broken ribs after getting into a fight with Halle Berry's fiance Olivier Martinez at the Oscar-winning actress' house.

According to law enforcement, Gabriel arrived this morning at Halle's house to return Nahla after visitation, when Olivier came to the door and told him, "We have to move on."

Aubry then allegedly threw a punch at Olivier, but missed. Halle's fiance then punched the male model (check out his knuckles in the above photo) ... breaking a few of Gabriel's ribs. Jabs were exchanged and Gabriel may have been left unconscious.

UPDATE - Gabriel Aubrey was taken to LAPD's downtown Metro station for questioning and just released at 7pm PT.