Who killed Peter Ivers?

Peter Ivers was a musician and performance artist, and the host of New Wave Theatre from 1981 to 1983. On 3 March 1983 he was found bludgeoned to death in his home. The case was never solved.

There was speculation that he was killed by a member or members of the L.A. punk scene. What evidence was there to back up that statement? All I’ve been able to find is that punks were suspected. No details. Is there evidence that he pissed someone off?