PENNSVILLE -- A bus fire on the northbound lanes of the Delaware Memorial Bridge Sunday evening caused major traffic delays as firefighters worked to extinguish the blaze, authorities said.

The fire was reported shortly after 6 p.m. and all northbound lanes were closed for about 30 minutes. By 9:15 p.m., two lanes remained closed, but with extensive traffic delays, according to a Delaware River and Bay Authority spokesman.

No injuries were reported, the DRBA spokesman said.

The bus is owned by "Weed World Candies," a marijuana-advocacy group that was headed to Philadelphia as part of a tour when it caught fire, NBC10.com reported. The organization sells marijuana-flavored candy, according to the group's website.

The owner of Weed World Candies told NBC10 that $50,000 in merchandise was lost in the fire. A photo posted by the DRBA showed just a charred frame of the bus remained.

Thanks to the firefighters from Holloway Terrace, Deepwater, Goodwill, & Minquadale for responding to #DMB bus fire. pic.twitter.com/M20fVPapS1 — Del Memorial Bridge (@demembridge) October 23, 2016