Social media places him in Pakistan in October of last year and in North Korea, where he was photographed in a tour group visiting the Samjiyon Grand Monument.
The destinations he visited now form part of the counterterror investigation being conducted into his past and character.
Meanwhile, he has been remembered by residents of Grafton in regional NSW as a “relatively normal” person, according to ABC.
The attacks, which took place during Friday prayers at the Masjid Al Noor mosque and Linwood Masjid left 49 dead and 48 injured about 1.40pm Friday local time. Forty-two people remain in hospital, including a five-year-old child.
9News has confirmed Tarrant, who grew up as a teenager in Grafton in regional NSW, was one of three men and one woman taken into custody after the attacks.