By 3 News online staff
An elderly man missing in Hamilton since Sunday was last spotted walking along the roadside, police say.
Trevor Smith, 70, was spotted by a member of the public walking beside the median strip on the wrong side of the road on Cobham Dr, towards Normandy Ave.
Now, police are appealing for the public's help.
"We don't know if anyone stopped to talk to him or picked him up but, if you did, police would very much like to speak to you," Detective Senior Sergeant Ross Patterson said.
Mr Smith suffers from dementia and diabetes and on Tuesday police said they feared he may be disorientated. He had been visiting friends outside Waikato Hopsital when he disappeared on Sunday evening.
Mr Smith needs insulin daily to treat his diabetes and police said he may be in distress because he had not had his medication.
The search for Mr Smith has so far involved around 40 police and Land Search and Rescue volunteers searching the Waikato Hospital campus, areas of bush and properties around that, as well as the area around Hamilton's Lake Rotorua.
"The search has progressed through to the Waikato River and has included searchers on the land and in a boat searching the river banks while a helicopter has been used to search the lake and areas inaccessible to the land based searchers," says Det Snr Srgt Patterson.
"In addition to that, we have been using a team of 15 detectives following up on possible sightings and reviewing security camera footage. Right now our request is for people who may have seen someone matching Mr SMITH'S description to contact us by ringing 111."
Mr Smith is described as being clean shaved with a number one haircut and of average to solid build. When last seen he was wearing a distinctive lime green Vodafone Warriors rugby league jersey, dark blue track pants, plain white sandshoes and a grey cap.