PHOENIX (3TV/CBS 5)-- Traffic is slowly getting back to normal in downtown Phoenix Monday morning following a vehicle fire.

The incident occurred on westbound Interstate 10 at the tunnel.

[VIDEO: Vehicle fire causes traffic backup on I-10 in Phoenix]

According to ADOT, the vehicle fire blocked the left lane of the tunnel and caused limited visibility for many drivers in the area.

For a time, traffic was backed up getting into the tunnel.

Fire crews were able to put out the fire.

The driver's condition is unknown at this time.

[Click/tap here to see the latest traffic conditions in Phoenix area]