Andrew Margulis There have been no reports of injuries and the FDNY and NYPD are currently investigating the cause of this accident on the Queensboro Bridge.

A truck caught fire as it approached the ramp to the Queensboro Bridge, prompting an explosion and forcing authorities to shut down the upper level of the span Sunday evening, according to the FDNY.

No injuries were immediately reported after the truck erupted in flames at about 7 p.m., the FDNY said.

Witnesses reported seeing intense flames and thick black smoke near the bridge.

Police and fire officials are investigating the cause of the fire.