A SEPTA bus went up in flames Tuesday morning.
The Route 33 bus caught on fire along the bridge that connects Chestnut and Market streets at Front near Penn's Landing in the Old City section of Philadelphia around 11:45 a.m.
No one was aboard the bus at the time, according to witnesses at the scene.
The bus typically runs between Penn's Landing and 23rd and Venango streets in the Nicetown neighborhood.