Before the shots were fired, Iloilo, 25, was speaking with Keon Brackenridge, according to witnesses.
Brackenridge, 31, reportedly refused to show identification before entering the casino, which resulted in an argument. He asked for a supervisor, who was Iloilo, according to documents.
Another security guard who witnessed the shooting said it is casino policy to ask for identification. Documents said this same security guard was the one who applied pressure to Iloilo's wounds.
Brackenridge then allegedly pulled out a pistol from his waistband and began shooting. The guards fired back, and Iloilo fell to the ground. Brackenridge ran toward South Union Avenue to hide. Deputies later found him at Playfair Market.
Brackenridge, who is a confirmed gang member, had three bullet wounds in his lower body.
Brackenridge was arrested and is facing murder charges.