WELLINGTON, New Zealand—The man who committed the worst atrocity in New Zealand’s modern history when he killed 51 worshippers at two Christchurch mosques unexpectedly changed his plea to guilty for all charges on Thursday.

Brenton Tarrant, the man accused of killing 51 people at two Christchurch mosques in March appears via video link at the Christchurch District Court, from the maximum security prison in Auckland where he's being held, Christchurch, New Zealand, on June 14, 2019. Stephanie McEwin/AP Photo
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