Police are asking for the public's help to find a man who has been missing in the Daintree region in Far North Queensland since Sunday.

Key points: Milan Lemic was last sighted by locals near his bogged black ute

Milan Lemic was last sighted by locals near his bogged black ute Police hold concerns for Mr Lemic's safety due to the remoteness of the area

Police hold concerns for Mr Lemic's safety due to the remoteness of the area The SES says crocodiles are known to inhabit the river system where Mr Lemic's car was bogged

Milan Lemic, from Victoria, was last seen next to his bogged black ute at Baird's Crossing in the Upper Daintree Village about 4:30pm on Sunday.

Investigators said a local farmer saw the 25-year-old man, spoke with him and went to go get his tractor to help pull the ute out.

By the time the passer-by returned about 20 minutes later, Mr Lemic was gone.

Police have been conducting an air and land search while the State Emergency Service (SES) crews have been scouring the Daintree River.

Senior Sergeant Ed Lukin police held concerns for Mr Lemic's safety due to the remoteness of the area, which is known crocodile habitat.

"Obviously the family are very concerned," he said.

"We can't discount the fact some animal interaction may have led to his disappearance.

"There's no indication he's injured or a danger to the public at this stage. This is out of character."

Senior Sergeant Lukin said Mr Milan had gone missing before, but never outside of Victoria.

"We are sending a vehicle up the CREB Track to see how far we get and see if he's up there [towards Cape York]," he said.

Senior Sergeant Lukin said Mr Lemic's disappearance continued "to be a bit of a mystery".

"There's two options — that he is lost or he is deliberately hiding out — and either one of those we are looking at in equal parts," he said.

Crocodiles are known to inhabit the river system where Mr Lemic became bogged. ( Supplied: Google )

Wayne Coutts, the SES regional director for the Far Northern Region, said a strong contingent had joined the search effort that resumed this morning.

"There's 15 volunteers in the area at the moment … we had SES there from mid-morning yesterday assisting with the search and continuing early this morning," he said.

"They're focussing on the area where he's vehicle was located, searching both on boat and on foot up and down the Daintree River and all the land associated around in case he's wandered off and been injured.

"We've also got a drone up there in the area to assist with the search.

"Whenever somebody goes missing we're always concerned no matter what the circumstances are and the SES will do whatever they can to try to return the missing person as soon as possible."

Crocodiles known to inhabit area

Mr Coutts said there were "indications" of crocodiles but no actual sightings.

"Basically he was bogged and he went for assistance. A local said he would come and assist him soon and when he got there the missing person was no longer with the vehicle," he said.

"It's certainly of concern there is a small time period there to try to factor in where he actually went to."

Mr Coutts said crocodile were known to inhabit the river system where Mr Lemic's vehicle was bogged.

"Anyone who is travelling in that area, please keep an eye out for this individual. If you do see anyone who fits the description, please Crime Stoppers or local police," Sergeant Lukin said.

Mr Lemic is described as Caucasian, about 191 centimetres tall with black hair.

He was last seen wearing a fluorescent singlet, black gym shirt with white writing on it, black tracksuit pants, no shoes and no hat.

The ute Mr Lemic was driving was bearing Victorian number plates with the registration XAW992.