Brenton Harrison Tarrant

The man who committed the worst atrocity in New Zealand's modern history when he slaughtered 51 worshippers at two Christchurch mosques unexpectedly pleaded guilty to all charges on March 26.

Police say that Brenton Harrison Tarrant, who has been arraigned for the deadly shootings in two New Zealand mosques Friday, had stayed on the Greek islands of Crete and Santorini and transited through the country twice, all in 2016.

Australian Brenton Harrison Tarrant, 28, a suspected white supremacist, was charged with murder on March 16 after 49 people were killed and dozens wounded in mass shootings at two New Zealand mosques.