June 17, 2014 1:25 pm Teen accused of killing teacher allegedly assaults DYS employee 16-year-old Phillip Chism has pleaded not guilty in murder of Danvers, Mass. teacher Colleen Ritzer US & World Videos 0:59 Jury seated in Karen Read murder trial, hearing for outstanding motions Thursday 1:33 Ice Cube talks basketball: The Big 3 league, how far the Celtics can go, and more 2:31 Mike Gorman retires as voice of the Celtics 1:27 Ex-Holyoke city councilor facing child sex abuse charges appears to join Russian military 1:21 Dana-Farber Cancer Institute retracts 7 studies