A gas-mask-wearing assailant stormed into a Massachusetts courthouse Monday and unleashed a tirade, pepper-spraying officers and assaulting bystanders at random in a shocking, caught-on-camera attack.

THIS GUY, THEY’RE BEING HAILED AS HEROES. SURVEILLANCE VIDEO SHOWS THE SUSPECT WALKING UP THE STEPS WEARING A GAS MASK AND SPRAYING PEPPER SPRAY. THE COURT OFFICER AT THE DOOR OPENS IT.

WOBURN, Mass. — Police in a Boston suburb have arrested a man who they say entered a courthouse while wearing a gas mask and tactical gear and attacked several people with pepper spray.

A Massachusetts man wearing a gas mask and tactical gear was captured on video walking into a courthouse in a Boston suburb and attacking several people with pepper spray on Monday. Nicholas ...

A Woburn courthouse was evacuated Monday after a man in a gas mask released pepper spray inside, prosecutors said. Nicholas Akerberg, 28, of Yarmouth, went into Woburn District Court around 10:25 ...