“It is with sadness that I advise that number of people who died in this event has now risen to 50. As of last night we were able to take all of the victims from both of those scenes. In doing so we were able to locate a further victim,” Bush told a media conference.
The number of injured after the attack was also 50, he said.
Meanwhile, police said on Sunday that two people arrested at the time of the mosque attacks were not involved in the massacre.
A police spokesman said the two were detained at a police cordon and were carrying firearms, but were not directly involved in the attacks, which killed 50 people.
“At this moment, only one person has been charged in relation to these attacks,” he said, referring to right-wing extremist Brenton Tarrant.