NEWCOMB — More than five months after he was reported missing, the state Department of Environmental Conservation confirmed Monday that remains found over the weekend were those of Leo DuFour.

DuFour, 22, was from Vaudreuil-Dorion, Quebec. He had set out to hike Allen Mountain, a High Peak with an elevation of 4,340 feet, on Nov. 29. He was hiking alone and was reported overdue around 11 p.m. the next day.

The remains were first reported to the DEC by a group of hikers around 11 a.m. Saturday, according to a DEC spokesman. They were found along the Allen Mountain hiking trail, though it was unclear where along the trail, or how proximate to the mountain’s summit they were.

A team of several Forest Rangers, a DEC Division of Law Enforcement Bureau of Environmental Crimes Investigator and State Police responded to the scene and facilitated the recovery effort. DuFour’s family was first notified of the recovery by the DEC over the weekend.

“The DEC family offers our deepest condolences to the DuFour family for their loss and extends our appreciation to our dedicated Forest Rangers for their tireless efforts during the continuous and active search effort over the last few months,” the agency said in a statement.

After DuFour was reported missing, forest rangers and their law enforcement partners engaged in a nine-day active search on and around Allen Mountain. It was a large effort, encompassing a total of 59 rangers covering a roughly combined 400 miles on foot throughout the area.

When the weather permitted, aircraft were also used in the search, both as a means to drop off personnel closer to the rescue area to avoid a long hike in, as well as to use infrared technology from the air that tried to pick up on a heat signature.

Search teams faced brutal winter conditions. A persistent snowpack that, at times, grew to between 4 and 5 feet deep at higher elevations combined with often strong winds and frequent poor visibility to make “detectability” extremely difficult, according to DEC updates at the time.

The active search was terminated on Dec. 8, though limited searches had resumed more recently as spring conditions began to melt away the snow.

Portions of the trail to Allen Mountain are unmarked and unofficial, including the final portion of the hike that gains most of the elevation near the summit. Allen Mountain is considered an extremely isolated peak — the most remote High Peak in the Adirondacks, according to Forest Ranger Scott Sabo. The trail to its summit is approximately 9 miles one-way from the Mount Adams parking lot, with several bridgeless streams to cross.