Video obtained by WCVB shows the moments when a man in a gas mask armed with pepper spray canisters stormed the lobby of a ...

Police in a Boston suburb have arrested a man who they say entered a courthouse while wearing a gas mask and tactical gear ...

COPS are hunting for a "masked man" who reportedly released gas on trams full of passengers. Tram users were left scared after the gas mask-clad man reportedly discharged a mystery gas on board ...