Police have called off a search for a northwest Queensland teen but friends and family continue to look for the 17-year-old.

Northwestern Queensland teen Kyle Coleman vanished last month and police have no clues as to what has happened to him.

A police search spanning thousands of kilometres around Mount Isa and a nearby cattle station was called off earlier this week.

However, the 17-year-old’s desperate family and friends continue to look for him.

“They’re clinging for hope for anything at this stage,” Mount Isa Inspector Trevor Kidd told AAP.

“It’s very difficult at the moment, to be blunt … this is one of the more challenging cases.”

Kyle’s best mate told police he last saw his friend when he left his Soldiers Hill house to walk the three kilometre journey home during the early hours of February 22.

But Kyle, who enjoys camping and lives with his parents, never arrived home and he hasn’t been seen since.

There have been no other confirmed sightings of Kyle in Mount Isa since the day he disappeared.

Four days later, on February 26, Kyle’s best mate took his own life.

Insp Kidd says there’s no evidence to suggest the 21-year-old’s death is in anyway linked to Kyle’s disappearance.

Detectives are baffled by the case and say they are desperate for any new information.

It was initially believed Kyle attended a party in Mount Isa on the night of February 21 but this has since been ruled out.

Kyle’s best mate told police the pair had driven to Undilla Station at Camooweal, west of Mount Isa, the day before Kyle disappeared and witnesses have told police they saw the pair at the station.

The teen’s disappearance has gripped the town with some residents taking time off work to help with the search.

Kyle’s parents, Rob and Sonia Coleman, have made a public plea for information, while posters of the missing teen are plastered on shopfronts around the outback city.

* Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or the Suicide Call Back Service on 1300 659 467.