Police are continuing their search along the river bank of the Waikato River with a focus on the camp site confirmed as belonging to Tama Hurinui Retimana whose body was discovered earlier this week.
Retimana lived at the camp site with his partner and his death is being treated as suspicious.
"We are looking to identify the other occupants who were believed to be living in the campsite with Retimana and his partner prior to him being discovered in the river," said Detective Sergeant Terri Wilson.
CCTV footage has been gathered from various cameras throughout Hamilton's CBD area, police said.