The crazed gunman dressed in black who went on a rampage at a Connecticut elementary school this morning has been identified as Adam Lanza, according to reports.
The Connecticut school shooting left 27 dead, including Lanza and 18 children.
Adam Lanza, 20, reportedly shot and killed his mother, a teacher, then targeted her kindergarten class at Sandy Hook Elementary School in Newtown, Conn.
Police in Hoboken, N.J. are questioning his brother Ryan Lanza, 24, who was originally reported as the shooter; the N.Y. Post says he is not a suspect.
The Post says Adam Lanza and his mother "had a dispute" of some kind.
Lanza used two handguns and a .223-caliber assault rifle in the rampage.
Officials also said New Jersey state police are searching a location there in connection with the shootings. Adam Lanza is believed to dead inside the school.
It was initially reported that Lanza shot and killed his father in Hoboken, N.J., before arriving at the school in Connecticut; this has not been confirmed.
The shooting took place just after 9:40 a.m. Friday.
According to a witness report, the school's principal and another staffer were killed while the vice principal was shot in the leg after the gunman opened fire.
A witness said gunshots were heard in the hallway during a meeting this morning and that "100 rounds" must have been fired, according to CNN.
After the shots were fired, three people ran into the hallway but only the vice principal crawled back.
Police responded frantically to reports of the shooting at Sandy Hook Elementary, and said the gunman was in the school's main office, according to reports.
The newspaper reports that as of 11 a.m., police were still searching the school with dogs; the death toll rose dramatically and shockingly throughout today.
The event appeared to be the second-deadliest school shooting in U.S. history, exceeded only by the Virginia Tech massacre in 2007, which left 32 people and the gunman dead.
Story developing ...
UPDATE, 12/15: The first Adam Lanza photos and additional details have been released.
Lanza is now believed to have killed his mother, Nancy, at her home where he lived, using weapons registered to her. She was not a teacher at the school.
After that killing, he drove to the school and killed 26 people, including 20 children, before taking his own life, bringing the death toll to 28 in all.