“He was last seen around 3pm on Wednesday 17 January 2024, wearing black cargo pants and a green T-shirt with a print of a gasmask while shopping on Avalon Drive, Nawton,” Detective Inspector Harpur said.
Isaac made two visits to the Avalon Drive store to make purchases, but the detective inspector wouldn’t reveal what he bought.
Newshub understands Isaac had links to the Mongrel Mob but was not a patched member.
His tangi was held in Tītahi Bay on Wednesday and his whānau is being supported by police and Victim Support.
“Somebody out there knows who is responsible for this, and exactly what happened. We urge them to come forward and tell police what they know.”
Police are continuing to call for information from anyone who saw anything unusual or suspicious on the banks of the Waikato River, anywhere from Hamilton CBD to Ngāruawāhia on the afternoon of January 18.
“We believe some people will also have photos or videos from recreational activity in the river and the surrounding areas, we ask that you reach out to Police to provide anything that can assist.”