BAXTER STATE PARK, Maine — An expanded ground and air search continued Saturday for a 78-year-old Virginia hiker last seen on the Marston Trail loop trail near Mount Coe peak two days ago, officials said.

Eighty people, including park rangers, Maine Warden Service, Civil Air Patrol and volunteer search and rescue workers, are looking for John Lyon of Dumfries, Virginia. Lyon left his three hiking companions on the trail at about 1:30 p.m. Thursday to hike ahead, according to a post on Baxter State Park’s Facebook page.

Search resources include ground searchers, dog teams, and fixed wing and rotor aircraft. Lyon was last seen on the Mount Coe Trail north of the Mount Coe peak around 1:30 p.m. Thursday before leaving his three hiking companions, also from Virginia, to hike ahead.

The Marston and Mount Coe trails have been closed to public hiking to facilitate the search effort.

Watch for updates.