Batman killer has 'not guilty' plea entered by judge

The judge in the US Batman cinema massacre case has entered a not guilty plea on behalf of James Holmes after his defence team said he was not ready to enter one.

Holmes, who killed 12 people and injured 70, could be executed or spend the rest of his life in prison if he is convicted. Judge William Sylvester said Holmes, 25, can change his plea to not guilty by reason of insanity later, if he chooses.