Breaking: As many as 20 dead in Connecticut school shooting; Update: 27?

Multiple fatalities have been reported at a shooting at an elementary school in Newtown, Conn., about 65 miles northeast of New York City. One law enforcement offcial said preliminary reports suggested there could be as many as 20 fatalities.

One state official said that an adult gunman was believed to be dead in the shooting at Sandy Hook Elementary School in Newtown. The gunman was in possession of at least two firearms, the official said.

Update: Worse and worse — CBS says it’s 27 dead, 14 of whom are children.