UPDATE: ROCKY MOUNTAIN NATIONAL PARK, Colo. (AP) - Rocky Mountain National Park has suspended the search for a 70-year-old Tennessee man who has not been heard from since late February.

James Pruitt's vehicle was found March 3 at the Glacier Gorge Trailhead, a popular starting point for hikes to Alberta Falls and scenic lakes. His family confirmed he was in the area and hadn't been heard from since Feb. 28.

Park officials say more than 2 feet (0.6 meters) of snow fell in the area between Feb. 28 and March 3, and a 15-square-mile (39-square-kilometer) search that included numerous dog teams and an airplane turned up no sign of the Etowah, Tennessee man.

The search was suspended Friday.

Family members told park officials Pruitt was making his third winter visit to the park over the past three years.

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PREVIOUS STORY: An Etowah, Tennessee native has now been missing for four days in the Rocky Mountain National Park. 

Search crews spent all of Tuesday using a dog team and a multi-mission aircraft to search areas; they continued those efforts today but focused on more forested areas. 

In total, the search team is covering 15 miles of the park.

PREVIOUS STORY: ESTES PARK, CO (KWGN) - The Rocky Mountain National Park Search and Rescue team has begun searching for a 70-year-old man who hasn't been heard from since Thursday morning after his vehicle was found at a trailhead in the park.

According to a release from the National Park Service, rangers found a vehicle parked at the Glacier Gorge Trailhead in Rocky Mountain National Park.

On Sunday morning, they were able to determine that the vehicle belongs to James Pruitt, of Etowah, Tennessee.

Rangers reached out to Pruitt's family who said they last heard from him around 10 a.m. Thursday morning, the release said.

Rescue teams began searching the Glacier Gorge drainage, the Loch Vale drainage and the Glacier Creek drainage Sunday, according to the release. Larimer County Search and Rescue Dog Teams, Diamond Peaks Ski Patrol and Rocky Mountain Rescue Group helped with the search.

According to the release, the Glacier Gorge area has seen about 2 feet of snow since Thursday.

The search will continue early Monday morning.

Park rangers are asking anyone who has been in the Glacier Gorge and Bear Lake areas since Thursday, Feb. 28, or who may have had contact with Pruitt regarding his planned route call Rocky Mountain National Park at (970) 586-1204.