Mr Jack's family are mystified as to why he was walking home alone on the night he was killed.
An aunt of the 20-year-old, who asked not to be named, said he was nearly always surrounded by friends.
"He was really well-liked, he had a lot of friends and would hang out with his cousins, he just had people around him all the time and always came home with friends," she said. "He was a really good kid, he wasfocused on his work and on succeeding."
Mr Jack lived in Edgecumbe and had worked in the forestry industry for more than a year. He would travel to Rotorua for the weekends to meet his friends.
The focus of the inquiry remains on the stretch of Te Ngae Rd between the Caltex Service station at the Owhata Rd intersection and the McDonald's restaurant.
Police are particularly interested in information about any vehicles or people who stopped to speak to Mr Jack or picked him up.
They are also interested in details of any vehicles that were damaged on or about August 18, or vehicles that have had repairs or alterations to disguise damage.