Authorities state that Tillman was beat by multiple attackers beat and stomped him until he was unconscious, Deputies arriving at the scene tried to administer CPR to the teen but he didn’t survive.

District Attorney David McDade said the four teens will be charged for the crime of murder in the death of the 18-year-old and Tillman’s mother said she wants justice for her son.

“He was my only son. He was my best friend. He was an angel here on earth and I was blessed to be his mother,” Monique Rezaida said.

My son did not die in vain. My son is a silent hero. He touched so many lives I didn’t know about. Bobby was a ray of sunshine through every dark cloud.”

Douglas County Coroner Randy Daniel gave the official cause of death November 8, stating Tillman died of blunt force trauma to the head and chest.

Court records show that Quantez Devonta Mallory, Horace Damon Coleman, Emanuel Benjamin Boykins and Tracen Lamar Franklin are the four men charged with Tillman’s murder.