Turnbull doesn't back up PM's ABC call

Communications Minister Malcolm Turnbull has refused to endorse the prime minister's claim that heads should roll at the ABC, after it allowed a convicted criminal on live television.

Tony Abbott made the call after the public broadcaster replayed Zaky Mallah's appearance on the Q&A program, despite admitting it was an error of judgment.

"I will decide what metaphors I use and the manner in which I use them," Mr Turnbull told ABC TV on Thursday night, when asked if he agreed with Mr Abbott.