MONTGOMERY COUNTY, Md. (WJZ) — A tractor trailer carrying 40,000 pounds of chocolate bars rolled over on Interstate 270 in Montgomery County early Friday morning, injuring the driver.

The crash happened around 1 a.m. on the southbound Interstate 270 on-ramp to Route 118. The truck hit a police squad car before jack-knifing and overturning, trapping the driver inside.

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The driver was extricated and taken to an area hospital with non-life threatening injuries.

The Montgomery County police officer, who was conducting a traffic stop when the crash happened, was not hurt.

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The truck was hauling 40,000 pounds of Hershey chocolate bars and Kit Kat bars at the time of the collision.

Hazardous materials crews helped remove diesel fuel from the truck.

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Traffic was delayed in the area for several hours.