PFLUGERVILLE, Texas — Traffic was heavily delayed in north Austin after a semi-truck caught fire early Thursday morning.

It happened around 2:27 a.m. on the interstate near the Waukesha Drive ramp in Pflugerville, north of Wells Branch Parkway.

The semi-truck, carrying produce, was blocking at least one lane of traffic at northbound I-35.

Police have not said what started the fire and Austin firefighters cleared the scene by 9:30 a.m.