SYLMAR (CBSLA) — A big rig burst into flames off the 5 Freeway in Sylmar, igniting brush and shutting down freeway lanes on the 5 Freeway.

The fire was first reported at about 11 p.m. Monday off the truck route from the northbound 5 Freeway to the 14 Freeway. It’s not clear what may have sparked the fire.

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The driver was able to get out of the truck safely. But the massive fire did spread to nearby brush and caused a fuel spill.

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Hazmat crews are on the scene to clean up the spilled fuel.

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All truck route lanes and two right lanes on the northbound 5 Freeway were shut down immediately after the fire.