Police confirmed the 14-year-old boy killed himself after wounding another 14-year-old boy, a 17-year-old boy and two male teachers, ages 42 and 57, The New York Times reported.

A 14-year-old girl, injured her knee scrambling for safety.

The shootings occurred at SuccessTech Academy, a small high school with a non-traditional structure. Investigators believe the shooter was upset because he had been suspended Tuesday following a fight with other students Monday, WTAM-AM reported.

Tammy Mundy, mother of two SuccessTech students, told The (Cleveland) Plain Dealer her son called by cell phone to let her know he was shot in the arm. Her daughter called and said she was hiding in a closet.

Mayor Frank Jackson said both teachers and the 14-year-old boy were in stable condition, while the 17-year-old student was expected to be treated for an elbow wound and released. The mayor said the shooter was found dead on the school's fourth floor. Two guns were recovered.

Mychael Wilmore-Smith, 14, said she heard shooting and the shooter shouting "Shut up. I hate this school."