NEWTOWN, Conn. — There's been a deadly shooting at an elementary school in Connecticut -- where an official says 27 people have died, including 18 children.Another official says the gunman at Sandy Hook Elementary in Newtown was killed. The official says the shooter apparently had two guns.Frantic parents rushed to the school to check on their children. One man says his 8-year-old daughter heard two big bangs, and teachers told her to get in a corner. The daughter was fine.A woman says it was "the happiest moment" of her life when she found her own 8-year-old daughter safe.The 17-year-old brother of a 9-year-old girl at the school says he raced to the school, and found she was OK. He says his sister heard a scream come over the intercom at one point. The teen says teachers were shaking and crying as they came out of the building.A photo in the Newtown Bee newspaper showed a group of young students being escorted through a parking lot by adults. Some were crying, and others looked visibly frightened.The school superintendent's office in Newtown, about 60 miles northeast of New York City, says the district locked down all of the schools in the town. Schools in neighboring communities were also locked down.The White House says President Barack Obama was notified of the shooting.