Peel Regional Police have made a fourth arrest in the death of a Brampton "Good Samaritan" who was shot while trying to stop an armed robbery during a charity poker game last year.

Kearn Nedd, 28, died in hospital after he was shot at the Rozz Banquet Hall in Brampton on April 16, 2011.

Police allege that two masked men carrying firearms burst into the hall and fired several shots in the course of a botched robbery attempt. More than 130 people were inside the hall for the afternoon tournament at the time of the robbery.

Nedd was shot after a scuffle with one of the gunmen. Police said he was acting as a Good Samaritan, as he ran to assist the organizer who was being attacked by the gunman.

Police allege that both masked gunman fired their weapons at Nedd during an altercation.

The suspects then escaped from the hall and fled to a waiting vehicle.

Nedd, who was a rising star in mixed martial arts, was taken to Brampton Civic Hospital where he died of his injuries.

Twenty-five-year-old Brian Funes has been charged with accessory after the fact to murder and conspiracy to commit robbery.

Funes, known by the street name "Spanish," was in a Brampton court on Tuesday for an unrelated manner when he was charged and brought before the Ontario Court of Justice to face the charges.

In March, Peel police charged Kmar Kelly, 21, of Toronto, with second-degree murder.

A 15-year-old boy, who was 14 at the time of the incident, has previously been charged with second-degree murder in the case.

Another man, Samir Abdelgadir, 30, was charged with accessory after the fact to murder.

Peel Regional Police say the investigation is ongoing and anticipate further arrests in the case.

Anyone who was present at the shooting, or who may have information, is asked to contact Peel Regional Police at 905-453-2121, ext. 3205.