HARWICH, Mass. (AP) – Bail has been set at $200,000 cash for a man accused of trying to rob a convenience store armed with a grenade that turned out to be fake.

Police say a masked Dennis Walsh walked into the store Sunday night holding the grenade and demanded money while threatening to pull the pin.

Police say Walsh fumbled with the pin, then got scared by a store employee and tried to escape. Three witnesses chased and grabbed him.

Walsh is charged with armed robbery while masked, assault to rob while armed and assault with a dangerous weapon.

He pleaded not guilty at his arraignment Monday in Orleans District Court.

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