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UPDATE: I-40 eastbound at the Fort Smith Junction is back open after a semi fire Thursday morning. 

OKLAHOMA CITY – Part of a busy interstate in Oklahoma City is blocked Thursday due to a semi fire.

Emergency crews responded to the scene early Thursday morning near I-40 eastbound and I-35 northbound.

It is unknown what led up to the incident, but a semi crashed in the area and caught fire.

According to the Oklahoma Highway Patrol, I-40 eastbound at the Fort Smith Junction is shut down due to the incident.

Officials say two people were in the vehicle at the time of the crash. They were not injured.

Drivers are encouraged to avoid the area and find an alternate route.