The Casper Police Department, Natrona County Sheriff’s Office, Casper Fire-EMS, and the family of Kristi Richardson are encouraging people to search their private property over the next few days if they have not done so already, according to a news release from Tim Cortez.

Friday morning, Cortez said another search will be conducted on Casper Mountain from 8 a.m. to 11 a.m. with students in Casper College's Fire Science Program.

"This will be an opportunity for these people who are aspiring to become firefighters, to conduct operations in real scenario," he said in a news release. "They will be searching in steep terrain as an area of opportunity, as no particular areas have been identified by the investigation."

Other volunteers are welcome.

Those participating in that search should bring appropriate clothing and footwear because all areas will be searched by foot, Cortez said.

Richardson, 61, is 5-feet, 4-inches tall and weighs less than 100 pounds.

Her last known contact was 7:45 p.m. Oct. 6 with a member of her company, according to court records.

Casper Police have searched her house and office at Richardson Trucking.

Out of respect for private property rights and the lack of information pointing towards a particular area, we are asking landowners to search their property. Authorities are especially asking people to search rural areas and roadsides.

If you cannot search your property and think that Kris might be in the area, contact Tim Cortez at 259-2507. Cortez will assist your search with volunteers or law enforcement.

If you have any information related to the case, please contact Casper Police at 235-8278.