30-year-old New Jersey hiker, Ryan Albert, was reported missing to Denver police on Friday when he did not return on schedule from hike in the Longs Peak area of Rocky Mountain National Park.

Search and rescue teams have been working since Saturday morning but snow and icy condition have hampered their efforts. NJ.com reports that due to safety concerns, only the canine team was sent out Monday morning. The weather outlook for the week calls for more freezing temperatures and snow.

If you have any information about Ryan’s whereabouts please call 970-586-1204.