WATCH: Video released of pepper spray attack in Woburn courthouse

Video obtained by News shows the moment a masked man ran into a Woburn courthouse and pepper-sprayed a court officer Monday Nicholas Akerberg of Yarmouth Port deployed pepper spray in the lobby of Woburn District Court before he was tackled to the ground by law enforcement police stated The building was evacuated following the attack Court guard cameras recorded a man later identified as Akerberg entering the courthouse and using the spray Prosecutors say he was wearing a helmet gas mask tactical boots and sunglasses at the time Aberberg a Stoneham police detective and three court officers were all taken to the hospital for cure according to prosecutors Prosecutors say Akerberg was carrying eight cans of pepper spray and two smoke bombs He had been scheduled to appear in court Monday following an circumstance in Stoneham last year where two police officers there were pepper-sprayed Akerberg was arraigned later Monday and is being held without bail The judge ordered him to undergo a psychiatric evaluation He is due back in court next month This is a advancing news story stay with NEWS on-air and online for the latest details