Police are focused on tracking the whereabouts of a blue and silver coloured road bike found in the layby area.
Pilmer said they were interested in sightings of the bike between 8pm on Tuesday and 5am yesterday.
Police also wanted dashcam or CCTV footage from Ōtaika Valley Rd, between the intersections of SH14 and Loop and Cemetery roads, during that same time period.
“I am asking anyone with a dashcam or CCTV cameras to prioritise checking these now, and contact our investigation team,” Pilmer said.
People can upload photos or footage to an online portal.
Information can also be provided to police via 105 - reference file number 250129/0335 - anonymously through Crime Stoppers on 0800 555111.
A rāhui has been placed by Te Parawhau hapū on the area where the man was found dead. It will be lifted on Friday at 8pm.
Ōtaika Valley Rd between SH1 Ōtaika and SH14 Maungatapere has been closed since 9.30am yesterday but was expected to reopen at 2pm.