Semi accident seriously injures at least one on I-40 EB near south MLK Ave.

OKLAHOMA CITY – Crews are investigating a serious accident involving a semi truck on I-40 eastbound near S. Martin Luther King Ave.

Officials on scene have not confirmed what caused the wreck but it appears a truck somehow collided with the back half of a semi truck.

The impact was so severe the pickup truck knocked the wheels out from under the back part of the semi trailer.

Emergency crews have not released the condition or the identities of those involved.

Traffic is backed up for over a mile.

Authorities are asking drivers to avoid the area.