Wael Taji in Quillette:
On Sunday 28 April 1996, Martin Bryant was awoken by his alarm at 6am. He said goodbye to his girlfriend as she left the house, ate some breakfast, and set the burglar alarm before leaving his Hobart residence, as usual. He stopped briefly to purchase a coffee in the small town of Forcett, where he asked the cashier to “boil the kettle less time.” He then drove to the nearby town of Port Arthur, originally a colonial-era convict settlement populated only by a few hundred people. It was here that Bryant would go on to use the two rifles and a shotgun stashed inside a sports bag on the passenger seat of his car to perpetrate the worst massacre in modern Australian history. By the time it was over, 35 people were dead and a further 23 were left wounded.
Astoundingly, Bryant was caught alive. He was arrested fleeing a fire at the house into which he had barricaded himself during a shootout with the police. He later pled guilty to a list of charges described as “unprecedented” by the standing judge, and was sentenced to life in prison without the possibility of parole, thus sparing his victims and other survivors the suffering (and perhaps the catharsis) of a protracted trial. Yet, in spite of his guilty plea, Bryant did not take the opportunity provided by his official statement to offer any motive for his atrocities. Instead, he joked “I’m sure you’ll find the person who caused all this,” before mouthing the word ‘me.’ Intense media speculation followed, the main focus of which was Bryant’s history of behavioral difficulties. These were offered as possible evidence of a psychiatric disorder such as schizophrenia (which would have been far from sufficient to serve as a causal explanation for his crimes). However, the most notable and concrete fact of Bryant’s psychological condition was his extremely low IQ of 66—well within the range for mental disability.
More here.