UPDATE (7:30a 10/16): 23ABC has tracked down the tour bus that caught on fire yesterday, shutting down northbound highway 99 near the I-5 split.
A band called I Prevail posted on social media that it was their tour bus that caught fire.
We woke up to our bus catching on fire and going up in flames. We lost a lot of stuff, but the show goes on, still playing Fresno tonight.
— I Prevail (@IPrevailBand) October 15, 2016
They said their bus caught on fire for unknown reasons as they were traveling to Fresno for a concert Saturday night.
Band members said they lost a lot of stuff in the fire, but thanks to donations, they were able to still perform as scheduled.
RELATED: State Route 99 was named the deadliest highway in the U.S.
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UPDATE (9:58a): Officials have the number 3 & 4 lanes blocked off to traffic. Traffic is stop and go in the area, expect delays up to 10 minutes.
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According to the California Highway Patrol dispatch website, a tour bus caught fire on northbound 99, just north of the I-5 split just after 9 a.m. Saturday.
The California Highway Patrol said the tour bus caught fire from underneath.
Officials have temporarily stopped traffic in the area and are expected to keep the number 4 lane closed as they work to put the fire out.
This is a developing story, check back for details.