Inmate made a weapon out of sock and a lock; where did he get the lock?

CONCORD, NH (Oct. 12, 2014) —Myron Armstrong, 38, an inmate at the Federal Correctional Institution in Berlin, New Hampshire, has entered a guilty plea in the United States District Court for the District of New Hampshire to one count of possessing a weapon in a federal correctional facility, announced United States Attorney John P. Kacavas.