I agree he wasn't convicted of murder, as the charges were dismissed with prejudice. (ignoring the fact that no one was killed, so it would have been conspiracy

I agree he wasn't convicted of murder, as the charges were dismissed with prejudice. (ignoring the fact that no one was killed, so it would have been conspiracy to commit ...) I however don't ignore the context under which the charges were dropped: any conviction would be merely ceremonial, as he already has multiple life sentences from which he will never be released.