UPDATE (4:45p.m.) — A man was transported to the hospital following a fire on Interstate 40 West involving a fifth-wheel trailer.

According to the Knoxville Police Department a truck pulling a fifth-wheel trailer pulled over on the shoulder with an apparent brake fire in the trailer.

With the help of a bystander, the driver was able to separate the truck from the trailer. The male bystander then suffered an “apparent cardiac event,” according to the KPD.

Knoxville Fire Department personnel provided aid on scene until he was transported to a hospital. The bystander’s condition is unknown. No other injuries were reported.

KNOXVILLE, Tenn. (WATE) — Firefighters are on the scene of a fifth-wheel camper fire on Interstate 40 in West Knoxville.

Before 2 p.m. Wednesday the camper caught fire under the overpass of Pellissippi Parkway. Flames engulfed the camper and were seen touching the top of the overpass.

Video courtesy of  Kenneth Humphrey.

According to the Tennessee Department of Transportation SmartWay website, lanes were blocked in both directions.

Tennessee Department of Transportation spokesman Mark Nagi said Pellissippi Parkway westbound was closed at Kingston Pike due to the fire for a time.

All lanes of Pellissippi Parkway are now open, but traffic on I-40 is slow going at this time.

WATE 6 On Your Side viewer Sandra Hammons sent in the above video of the fire.

This is a developing story. We will provide more details as they become available.