Updated: 04/09/2014 11:46 AM
Created: 04/09/2014 10:42 AM KSTP.com
By: Leslie Dyste
The search area for a father and son from Minnesota missing near Mount Evans west of Denver, Colo. has been narrowed using signals from their cellphones.
Dozens of searchers are back in the mountains Wednesday to look for the men.
Authorities say 51-year-old Damian McManus and 19-year-old Evan McManus, who are from St. Louis Park, Minn., were last heard from April 2.
Cellphone data released by the Air Force Rescue Coordination Center on Tuesday shows both men's phones pinged last on Wednesday, April 2, near the southern part of the campground.
One shut off at 3 p.m., the other four hours later at 7 p.m. It's not known if the batteries died or if the phones were shut off. The pings have given crews a crude direction of where to search, according to Alpine Rescue member Howard Paul.
Relatives of the two men, including Damian McManus' wife, Katherine, and daughter, Lauren, are now in Colorado, but they cannot help search because of dangerous conditions.
On Wednesday Lauren McManus, Evan's twin sister, tweeted:
Attended a dedicated service this morning. Praying that today is the day…it has to be.— Lauren Mac (@LoloMac_) April 9, 2014
Alpine Rescue Team spokesman Bill Barwick says searchers are not sure the father and son were equipped for wintry conditions in the Rocky Mountains.
The media was not invited inside. About 60 family and friends of the McManus family turned out for the vigil. A family spokesperson told KSTP the prayer vigil was important to keep everyone's hopes alive and to also help students at St. Louis Park High School cope with a very tough, emotional time.
Andrea Bouzrara tells 5 EYEWITNESS NEWS the high school kids have been through a lot and are very devastated by all of this and to be able to reach out to them and let them know others are sharing in their worries is very important.
Bouzrara says the "best thing we can do is pray and hope for a miracle that Damian and Evan are fine and will either walk out of those woods, or be found by rescuers."
The Associated Press contributed to this report.