Police have released more information about the tragic murder of Danvers High School math teacher Colleen Ritzer: According to several witnesses, Ritzer caught Philip Chism, the 14-year-old student accused of murdering her, drawing in her class and asked him to stay after school.

Gruesome new details have emerged about the death of Colleen Ritzer, the young teacher allegedly murdered at Danvers High School Wednesday night by 14-year-old Philip Chism.