Claressa Shields and Ivana Habazin were getting ready for their weigh-in when someone sucker punched Habazin's trainer.

UPDATE (10/4/19 - 3:45p): Video of what went down before, and in the immediate aftermath of the incident have made their way online.

There are not many details about the person who punched the trainer, but eye witness accounts say that it was a sucker punch to the back of the head. According to NBC25, the police do have a person in custody, and we are assuming it is the puncher.

The actual fight is scheduled to happen Saturday night, but things obviously got started a day too early.

Reports indicate that the trainer has been taken to a local hospital in Flint, and is being cared for there.

Officials are still discussing what to do about the weigh-in, but I am guessing that it will take more than this to delay the fight tomorrow. We will keep you updated with more details as they become available.