Police are continuing to investigate the disappearance of Te Kuiti man Colin Heath.

The 46-year-old was reported missing on March 19 and was last seen in Te Kuiti.

"Police have made a number of enquiries since his disappearance but unfortunately he has not been found," says Waikato Police Detective Paul Galletta.

"His bank accounts have not been touched since this time and other efforts including reviewing telecommunications have been unsuccessful.

"His family and Police are extremely concerned for his wellbeing given the length of time that has passed since he disappeared," says Detective Galletta.

Police say that unfortunately, they do not have a clear area to search for Colin so continue to ask anyone with information on his whereabouts to contact Police .

"We are keen for any information, regardless of how small you may think it is," says Detective Galletta.

"It may be relevant to our investigation and assist us in locating Colin."

Anyone who has seen Colin or who has information about where he might be is urged to call 105 and quote file number 220322/3016.