HOLMDEL - Police say a shish-kebab food truck caught fire outside the PNC Bank Arts Center early Saturday morning, hours before country singer Keith Urban is set to take the stage.

According to NJ State Police, the fire erupted at about 5:30 a.m. in a food truck that serves shish-kebabs and would have been cooking for concert-goers during this evening's performance.

Crews from the Holmdel Fire Department arrived to extinguish the blaze, and police said in a statement that the NJ State Police Arson/Bomb Unit also responded to conduct an investigation, but "found nothing suspicious."

"The fire may have started from a propane tank," state police said. "Thankfully, no one was injured."

In addition to Keith Urban, the PNC Bank Arts Center is scheduled to host Vans Warped Tour - a music festival featuring several rock bands - on Sunday starting at 11 a.m. Vans tweeted to followers Saturday morning assuring fans that the show is "still on."

Toniann Antonelli is a social content producer for NJ 101.5. She can be reached at toniann.antonelli@townsquaremedia.com, or on Twitter @ToniRadio1015.