Stephanie Scott's accused killer led fantasy life online

The reclusive school cleaner accused of murdering NSW teacher Stephanie Scott pursued an active fantasy life online that involved military-themed computer games and neo-Nazi propaganda.

Vincent Stanford, 24, had no known friends, no social media profiles and barely talked to neighbours in Leeton, according to the Sydney Morning Herald.

But he did visit gaming forums and post comments under the moniker of the mythical Aztec serpent Quetzalcoatl.

The Herald reports that digital traces left by Mr Stanford in at least four computer forums show he spent most of his time in front of a computer, usually playing active-shooter computer games about galactic warfare like Stargate or Halo, or developing his own programs.

On YouTube, he "liked" pro-Nazi videos, Third Reich marching songs and clips supporting Libyan dictator Muammar Gaddafi.

On a video about Nazi leader Rudolf Hess, he posted "RIP Rudolf Hess. Ich bereue nichts", which translates as "I regret nothing".

Mr Stanford was born in Tasmania and lived in the Netherlands for a decade before moving to Leeton about a year ago with his older brother and mother.

He was employed at Leeton High School, where Ms Scott, 26, was last seen on Easter Sunday.

Her burnt body was found five days later off a bush track in a national park, 70km northwest of Leeton.