Crews spent much of Monday night cleaning up the mess left behind after a Montgomery County Transit Ride On bus collided with a tractor-trailer on I-270 in Gaithersburg, Maryland. 

A spokesman for Montgomery County Fire and Rescue Service tweeted photos from the scene, which at one point had all lanes blocked on the interstate just before the ramp for I-370.

The delivery truck was carrying multicolored paper products, which spilled into the roadway along with fuel during the crash. 

No information has been released about what caused the crash. 

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The Ride On bus was not carrying passengers at the time of the crash around 9:30 p.m. Its driver was taken to a hospital due to a separate medical issue. 

No other injuries were reported, police told FOX 5 DC.