A person of interest has been taken into custody in the disappearance of an 87-year-old woman and her 65-year-old son in eastern Kansas.

The Kansas Bureau of Investigation said in a news release Monday that family members reported Betty Mcnaab and Kenneth Mcnaab missing late Friday evening.

The release says a check of their rural Pleasanton home led the Linn County Sheriff’s office to suspect foul play. A person of interest was located Saturday and is being held for questioning.

Authorities with multiple agencies are investigating, including Overland Park police, the Crawford County Sheriff’s office, the Kansas Department of Wildlife and Parks and the Kansas Highway Patrol.