LAS VEGAS -- Police need the public’s help finding a parole violator who was convicted of battery.

It surrounds the death of Michael Cook, 18, who police said was shot and killed more than two years ago.

A little more than two years ago, Cook was shot and killed near Shadow Ridge High School at 5050 Brent Lane.

The charges against the alleged killer were dropped, because Chase Rader, 22, had a viable claim of self-defense, police said.

This stemmed from a fight. Ronnie Radke, who was involved, was charged and convicted of battery, but police said he jumped parole and is a wanted man.

“Still waiting for justice ... Now to have Ronnie on the loose is another slap," said Cook’s mother, Setta Freeman.

Radke was once part of the band Escape The Fate and still has a fan site on MySpace.

Cook's mother said her hope is that Radke turns himself in.

Radke has some unique physical traits, including a tattoo on his neck. It's a bird with the word "Dad," along with a spider web and skull.

He also has a scar on his left wrist.

Anyone with information is asked to call 775-684-2644.