A shooting at a suburban Connecticut elementary school has resulted in “multiple fatalities,” according to Newtown, Conn., Mayor Mark D. Boughton.

Boughton told reporters that those killed in the Friday morning assault included the shooter.

The Hartford Courant has reported that children may be among the dead, although police have not confirmed any numbers at Sandy Hook Elementary School.

Police are holding a news conference in Newtown, Connecticut, after a shooting at Sandy Hook elementary school. Follow details as they emerge