A Huntington Beach man was sentenced Friday to 10 months in jail and three years of informal probation after pleading guilty to punching and killing a 24-year-old bar patron, according to the Orange County district attorney's office.

Oscar Raul Medina-Perez, 24, is expected to be deported to Mexico by U.S. Immigration and Customs Enforcement once he completes his jail sentence. He pleaded guilty to felony involuntary manslaughter.

Medina-Perez punched Leovardo Vera Bustos after getting into a verbal argument with him while both were standing in front of La Barca Night Club in Stanton on the night of July 5, prosecutors said.

A security guard had attempted to break off the argument by standing between the two before the argument escalated, leading to the attack by Medina-Perez.

Once attacked, Bustos immediately lost consciousness and fell to the ground. He was taken home but never regained consciousness, according to prosecutors.

The next morning, Bustos was still unresponsive with blood coming out from his nose. He was transported to UC Irvine Medical Center and placed on life support.

He died about two weeks later after being taken off of life support, prosecutors said.

mona.shadia@latimes.com

Twitter: @MonaShadia