Screen Shot 2012-12-14 at 4.23.47 PMA crazed gunman dressed in black went on a rampage at a Connecticut elementary school this morning, in a massacre that left the shooter and 26 dead others – including 20 children.

Adam Lanza, 20, shot his mother dead and targeted her kindergarten class at Sandy Hook Elementary School in Newtown, Conn., sources said. Sources also told The Post that Lanza’s mother was a teacher at the school and he “had a dispute with her.”

Lanza was found dead inside the school.

Lanza used two handguns and a .223-caliber assault rifle, an official said. The official also said that New Jersey state police are searching a location in connection with the shootings.

Police in Hoboken, NJ are questioning Lanza’s older brother Ryan, 24, but he is not a suspect.

Read more at nypost.com