23-Year-Old Hiker Missing After Texting Friend That He’d Reached Top of Colorado Mountain

Lucas Macaj was last heard from on Sunday, May 12, around 1 p.m. local time

A 23-year-old man from Colorado Springs, Colo., has been reported missing after hiking in Longs Peak over the weekend.

Lucas Macaj was last heard from around 1 p.m. local time on Sunday, May 12. He had texted a friend that he was on the Longs Peak summit, but by Sunday evening, he was reported overdue late after “significant storms moved through high elevations in the park,” per Rocky Mountain National Park's Facebook press release.

The search for Macaj began on Monday, May 13, and rangers located his parked vehicle at the Longs Peak Trailhead.

Search efforts included air reconnaissance, "a heat-sensing fixed-wing flight and ground teams on the Keyhole Route" — an area Macaj hiked —  including The Ledges, The Trough, The Narrows, The Homestretch and the saddle between Longs Peak and Mount Meeker. Rangers also searched the Boulder Brook Trail.

The search for Macaj continued on Wednesday, May 15. "Team members have been reviewing aerial reconnaissance photos taken on May 13, for any possible clues," Rocky Mountain National Park spokesperson Kyle Patterson shared in a statement with PEOPLE.

Related: Missing California Hiker Found Dead at Base of Waterfall 5 Days After Going Missing

"Ground teams skied into the Hunter’s Creek drainage to the base of Keplinger’s Coulier," read the statement. Additionally, a dog team searched the Longs Peak Trail to Battle Mountain Junction, while a third team hiked Chasm Shelter to the Loft and "other areas between Longs Peak and Mount Meeker."

The team took shelter on Wednesday night and plans to continue the search Thursday morning, May 16, by skiing the Clark’s Arrow Route to the top of Keplinger’s Coulier. 

On Tuesday, May 14, "strong winds, white out conditions, and low visibility" impeded the search, per a Rocky Mountain National Park Facebook release.

As a result, investigators could not search the loft area and the Keyhole route on Longs Peak. However, they managed to hike the areas above Black Lake and below the Trough and the Ledges areas.

Related: Body of Missing Hiker, 61, Found at Bottom of Oregon Cliff After Not Returning from Solo Trip

On Monday, Rocky Mountain National Park Search and Rescue Team members were assisted with air reconnaissance by Flight for Life Air Ambulance and aircraft from the State of Colorado Department of Fire Prevention and Control (DFPC) — which includes a fixed-wing aircraft outfitted with infrared and color sensors.

Macaj is 5 feet, 9 inches tall, weighs 155 lbs. and has brown hair and green eyes. He is believed to be wearing a dark-colored top, tan or brown pants, khaki-colored boots, a black backpack and may be wearing a beanie and dark-colored gloves.

Anyone with information is asked to contact the National Park Service Investigative Services Bureau Tip Line by calling 888-653-0009, by filling out an online form on the National Park Service's Investigative Services website, or by emailing nps_isb@nps.gov.

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A representative for the Investigative Arm of the National Park Service did not immediately respond to PEOPLE’s request for comment on Wednesday.

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