California troopers were in for a shock when they retrieved a bag tossed from a fleeing stolen vehicle, uncovering a live grenade inside.

The revelation caused the evacuation of nearby homes and required the bomb squad to come out and safely remove the device.

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As detailed in a press release, the incident began around 3:30 p.m. on Friday. Troopers from the California Highway Patrol identified a stolen vehicle near 38th Street and Cerrito Avenue in Oakland. When they attempted to stop the car, the driver—identified as 28-year-old Carlos Kuceja—refused to comply and sped off. This chase extended into Berkeley, where Kuceja, approaching the intersection of Martin Luther King Jr. Way and Rose Street, was seen discarding a bag out of the car window.

A trooper who was in the area but not involved in the chase stopped to collect the bag.

“Upon looking inside, the officer observed what appeared to be a grenade with the safety pin partially removed,” troopers said.

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CHP notified the bomb squad from the nearby University of California, Berkeley, which responded and determined the grenade was “live and capable of detonating.”

Meanwhile, Kuceja allegedly ditched his car and started to run away but was quickly taken into custody. Cops evacuated nearby homes as they searched Kuceja’s vehicle for more explosives. Finding none, police allowed residents to return to their homes shortly thereafter.