The search continues for an 87-year-old Whitefish man who went missing in the Frozen Lake area Saturday night.

According to a press release from the Lincoln County Sheriff’s Office, Clifford Persons was picking mushrooms with a friend in an area about 11 1/2 miles east of Eureka.

Persons’ son said his father was with a friend, but hadn’t returned to the vehicle.

Deputies from the Lincoln County Sheriff's Office and members of Eureka-based Can-Am Search and Rescue responded to the area and began a ground search. Two Bear Air Rescue, based in the Flathead Valley, also responded and searched for more than an hour before being called to another emergency. Two Bear returned Sunday morning.

Ground crews and K-9s from Libby-based David Thompson Search and Rescue also assisted in the search that continued through Sunday and into Monday.

On Monday, additional searchers and K-9 units continued to look for Persons along with Flathead County Search and Rescue.

Montana Department of Natural Resources and U.S. Forest Service fire crews as well as U.S. Border Patrol have also assisted in searching for Persons.

Officials say the search continues, but provided no other information.