Updated at 2:06 p.m.

RAPID CITY, S.D. (KELO) — The Pennington County Sheriff’s Office says that both men have now been located and are alive.

Officials say they will be releasing more details later Wednesday afternoon.

Updated at 1:30 p.m.

Officials say Lawrence “Jeff” Willett has been located alive.

He has been taken to a local hospital to be checked out further.

They are continuing to search for Leon Kleingartner.

An Endangered Missing Advisory has been issued for two missing snowmobilers in western South Dakota.

Officials in Pennington County are currently searching for the two men.

Pennington County Sheriff’s Office says Leon Klinegartner and Jeff Willett, who are both 73 years old, were last seen before noon on Tuesday.

Authorities say they were heading westbound on Rochford Road, possibly in the area of Black Fox Campground.

They were on orange and lime green 2014 Arctic Cat snowmobiles.

They were expected back before dusk, but as of this morning hadn’t returned. Authorities say the men didn’t take their cell phones or maps along.

You’re asked to call authorities if you know about their whereabouts.

Volunteers who want to help in the search are asked to check in before going out. Civilian snowmobilers are asked to check in at the Rochford Volunteer Fire Department before heading out.

With weather conditions expected to deteriorate, authorities want to make sure everyone helping out is accounted for.