LEFLORE COUNTY, Oklahoma -- LeFlore County authorities are looking for a 74-year-old man who was last seen on February 11, 2011.
Sheriff Bruce Curnutt says the case began when deputies checked on a report of neglected horses at Donald Herring's rural farm south of Hodgen on February 16.
At the home deputies found Herring's cell phone with more than 60 missed calls.
Curnutt says they found Herring's truck a short time later on Tall Cedar Road near Cedar Lake with the keys still inside, a dead battery and the hood partially open.
Herring is a white male, 6'1", 220 pounds with blue eyes.
The Oklahoma Highway Patrol is assisting the sheriff's office with both air and ground searches near the Cedar Lake area.
Curnutt said Herring is known as the "Mule Man" because of his love for mules and horses.
He says the only family member they could locate is a daughter in Texas who told them she hasn't spoken to Herring in 10 years.
Anyone with information about Herring's whereabouts should call the LeFlore County Sheriff's Office at 918-647-2317.