Heath Ledger's father is calling for America to tighten its gun laws in the wake of the deadly theater shootings in Colorado.
"It's terrible -- the whole circumstances,'' Heath's father Kim told Australia's Herald Sun. "The guy's obviously a nut case. He has obviously lost it. I think what America should be doing is restricting the availability of ammunition or revisiting their gun laws—that's what they should be doing.''
The elder Ledger's comments came in response to Friday's shooting spree at a cineplex screening of "The Dark Knight Rises" in Aurora, Colo., in which 12 died and dozens were injured.
Holmes allegedly had dyed his hair red and told police after his arrest that he was the Joker.
Heath Ledger played Batman's nemisis the Joker in the previous film in the Warner Bros. franchise, "The Dark Knight," before he died from an accidental drug overdose in January 2008.
Ledger's made clear that "we can't blame Heath or the [Joker] character" for the incident.
"It's [The Joker] fictitious. I don't know what this does to the character," Ledger said. "I think that's the least of my worries. I'd be more worried about the families and other people involved in the tragedy.''