LURAY, Va. (CBS19 NEWS) -- A full-scale search operation is now underway for a missing man who may be in the Shenandoah National Park.

According to a release, 21-year-old Mateo Luis Cobo Zevallos was last seen on May 5 and was reported missing in Fairfax County on May 9.

He was leaving his home to go to George Mason University at the time.

Officials say his vehicle was found in the national park on May 16.

SNP officials add a “hasty search” was conducted Tuesday evening, and then the full-scale search operation began Wednesday morning.

Several trails and adjacent areas are closed due to the search, including Overall Run, Traces, Mathews Arm, Tuscarora, Beecher Ridge, and Thompson Hollow.

Search and rescue personnel are also using several parking areas.

Teams are on the scene from the Virginia Department of Emergency Management, the Fairfax County Police Department, the Virginia State Police, Piedmont Search and Rescue, the Blue Ridge Mountain Rescue Group, Old Rag Mountain Stewards, the Virginia Rescue Dog Association, Christian Ministries Search and Rescue, Search and Rescue Tracking Institute, Blacksburg Volunteer Rescue Squad, the Shenandoah Mountain Rescue Group, Blue and Grey Rescue Dogs, Trot Search and Rescue, and K9 Alert.

Zevallos is 5-foot-9 and weighs 190 pounds. He has black hair and brown eyes.

He was last seen wearing gray sweatpants and a plaid flannel shirt and he may have been carrying a North Face backpack.

VSP issued a Critical Missing Adult Alert for him earlier this week.

Anyone with information on Zevallos’ whereabouts is asked to call (540) 999-3422.