Many people have died following shootings at two mosques in the city of Christchurch, New Zealand.
Three men and one woman are in custody, police commissioner Mike Bush said. One of the killers is believed to be an Australian who has written a manifesto outlining his intentions.
In it, he espouses far-right ideology and anti-immigrant ideology. One of the killers live streamed the shooting which lasted for 20 minutes and up to 60 people may have been injured.