The shooter has been identified as 15-year-old Natalie Rupnow, alias Samantha. She reportedly opened fire inside the school, killing a teenager and a teacher. When the police arrived at the scene, they found the shooter dead. Madison Police Chief Shon Barnes indicated in a statement that the shooter most likely died by suicide. Police did not fire their weapons at the crime scene.
Iowa school shooter Dylan Butler identified as 'non-binary' on his Instagram and TikTok accounts. He used the pronouns 'he/they' and the profile bio reflected a 'pride flag' (representative of the LGBTQ+ community).