Members of the Clay County Sheriff's Posse (CCSP) will travel to Bloomington Saturday and Sunday to assist in the search for Lauren Spierer.
Spierer has been missing since June 3.
CCSP President Victoria Hill said the organization felt "honored" to be a part of the search.
"I think this is great for us to be recognized as a search team and to be called to help," Hill said.
Hill said on Wednesday, she received the request from missing person expert Lee Manning, who is affiliated with the National Center for Missing and Exploited Children (NCMEC). Manning has been directly involved in the search as well.
"He got our name from the statewide search and rescue directory through the Department of Homeland Security," Hill said.
The request was OK'd through Clay County Sheriff Mike Heaton.
"We do not do anything without his approval and authorization," Hill said.
Hill said five CCSP members will travel to Bloomington Saturday and another six will go Sunday. There are 13 members in the group.
"We'll be doing an urban search," Hill said.
Hill said CCSP members would meet with others involved in the search on the IU campus.
According to reports, Bloomington Police Department Capt. Joe Qualters has said approximately 150 people from other law enforcement agencies and others with search experience are involved in the mission.
The search, according to reports, is based around the Bloomington apartment complex where Spierer was last seen.
"We're going to assemble at 7:30 a.m. (each day)," Hill said. "I believe we're going to be searching four-six hours at one time. (After a break), either they'll deploy another group or we'll continue."
For CCSP, this is the first time it has been involved in a search outside of Clay County. In addition, Hill said the organization has not been involved in anything of this magnitude.
"But we have been involved in several missing person searches in Clay County," she said.
She added all CCSP members have extensive training in missing person searches.
"This is a ground search at this point," Hill said. "I think it's because it's an urban setting. We hope for the best."
Law enforcement have received hundreds of tips this week after releasing a photograph of a white pickup truck seen in the area where Spierer went missing.
In addition, the television show, "America's Most Wanted," will air new information regarding the case this Saturday.
According to information at the National Center for Missing and Exploited Children website (www.missingkids.com), Spierer is 4-foot-11 with blue eyes and blonde hair.
She was last seen at approximately 4:30 a.m., June 3, wearing a white tank top, a white button-down shirt and full-length black spandex pants.
Anyone with information should call NCMEC at 1-800-843-5678, the Bloomington Police Department at 812-339-4477 or e-mail email@example.com.