The Oklahoma Highway Patrol is investigating a train derailment in southwestern Oklahoma.
OHP Capt. Paul Timmons says at least three Stillwater Central Railroad cars were reported off the tracks northeast of Cement in Grady County, Monday afternoon, but no injuries are reported.
Timmons said it wasn't clear what caused the train to derail and company officials did not immediately return to phone calls and an email for comment.
The railroad is owned by Pittsburg, Kansas-based Watco Companies, LLC.