LAS VEGAS (AP) — Boxer Floyd Mayweather Jr. is about begin a three-month jail sentence in Las Vegas in a domestic violence case.

The undefeated boxer’s legal and ring advisers weren’t immediately commenting Thursday about Mayweather’s scheduled Friday morning surrender in court.

The case stems from a hair-pulling, arm-twisting attack on the mother of three of his children in September 2010.

Mayweather pleaded guilty last December to reduced charges in the altercation with Josie Harris while their two sons watched.

In January, Justice of the Peace Melissa Saragosa agreed to let Mayweather remain free long enough to fight Miguel Cotto on May 5 at the MGM Grand hotel. Mayweather won the bout.

Harris’s lawyer isn’t commenting on Mayweather’s scheduled surrender. Harris and the children now live in Southern California.