A search has resumed for a 27-year-old Dublin man who was reported missing from a hiking trail in Wyoming.

Cian McLaughlin was last seen around 2.30pm on Tuesday 8 June, approximately 800 metres from the Lupine Meadows Trailhead in Grand Teton National Park.

CJ Adams, a spokesperson for the US National Park Service, told RTÉ News that the search operation resumed this morning for a third day.

"Operations are continuing with over 40 park staff conducting ground searches along with five local search dog teams and members of Teton County Search and Rescue. We also running some aerial reconnaissance operations," Mr Adams said.

Cian McLaughlin failed to report for work in Jackson, Wyoming, on Thursday 10 June.

The Teton County Sheriff's Office received a missing person report late on 12 June.

It contacted Grand Teton National Park early the next day after being told that Mr McLaughlin may have been hiking there.

His vehicle was located at Lupine Meadows Trailhead in the park on Sunday.

Mr McLaughlin's route is unknown. He may have been walking in the Garnet Canyon, Surprise, Amphitheater, Delta, or Taggart Lakes area, according to the park's website.

The US National Park Service Investigative Services Branch said he was last seen wearing a cut-off tank top and shorts, a wide brim hat, and round sunglasses. He was not carrying a backpack.

The Grand Teton National Park is a mountainous area that contains trails, lakes and rivers.

"We are dealing with all kinds of difference terrain. There are trees on the ground, rocky terrain and deep slopes," according to CJ Adams of the US National Park Service.

"There is a lot of different things to cover but we are doing it with several teams that are split up and searching. We're doing the best we can and we hope to find him," he said.

The Department of Foreign Affairs said in a statement that it is aware of Cian McLaughlin's case and "has been providing consular assistance to the family".