UPDATE @ 7:56 p.m. – OKCPD confirms this was just a mechanical issue that disconnected the trains. No further information has been released at this time.
ORIGINAL STORY
OKLAHOMA CITY, Okla. (KFOR) – The Oklahoma City Police Department has confirmed it is responding to a train derailment 121st and Santa Fe.

The train derailment is blocking traffic on 122nd.
KFOR has a crew on the scene.
This story is developing.