Related article: 2 killed, 3 injured in shootings at Vt. school, homes; gunman shoots self
By Adam Silverman
The Burlington Free Press
BURLINGTON, Vt. — Essex Elementary School personnel knew Christopher Williams was acting strangely Aug. 24, 2006, and his former girlfriend, a teacher, warned administrators to call police if he approached the building.
Witnesses describe events of Vt. shootings