A tractor-trailer rolled down a hill Friday night and nearly hit a three-story apartment building in Rockville, Maryland.

It happened around 7:30 p.m. in the 2500 block of Baltimore Road, near Norbeck Road in Montgomery County.

Photos taken at the scene and shared by Montgomery County Fire and Rescue spokesperson Pete Piringer showed how the Safeway tractor-trailer rolled down a hill and went through a fence, stopping just short of hitting the apartment building.

Hazmat officials were called to assess the scene as the tractor-trailer’s saddle tanks ruptured during the incident, causing a fuel spill of over 60 gallons of diesel.

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Piringer said first responders worked to clean up the spill with the help of officials from the Maryland Department of the Environment to ensure all environmental concerns were properly addressed.

Authorities are investigating what prompted the tractor-trailer to roll down the hill.

Below is a map of the area where the incident took place: