Australian Labor Party leader Bill Shorten says there is "no hole in the ground big enough" for the man who carried out the Christchurch massacre.
Speaking to the Herald, Shorten said Australia as a whole was "shocked by the act of evil" committed by the man.
Prime Minister Jacinda Ardern has confirmed the man, who was this morning charged with murder, is an Australian citizen.
Although he said the massacre was tragic regardless of who pulled the trigger, "the fact that it was an Australian who did it was even worse."
Asked why, he said because Australians "love New Zealanders".