Police investigators said Friday the body of a woman found dead inside a car parked in a storage container in a rural Arkansas field has been identified as a missing Kansas mother; her death has been ruled a suicide.

Marilane Carter disappeared a little more than two weeks ago in the Memphis area while she was driving from her home in Kansas to seek mental counseling in Alabama where she had previously lived.

Memphis-area media reported that the Arkansas State Medical Examiners Office has ruled Carter’s death as a suicide and that she died from asphyxiation from carbon monoxide.

Carter’s uncle, who was in the area helping to search for her, found her SUV inside a shipping container off a gravel road near Interstate 55.

Investigators have said the vehicle’s ignition switch was in the run position when the car was located.

“Information gathered from family members concerning her mental and emotional state during her final communications along with facts gathered from the scene have led investigators to believe that Marilane Carter drove the vehicle into the container and in doing so caused her demise,” Crittendon County Sheriff’s Office Chief Todd Grooms said.