Motive: So far as we know, "hate everyone" type of ideology with incel & Trans elements; combined with attention-lust; combined with ???? who knows what else? abuse, occultism & SSRI drugs often get covered up, for $$$some reason

report - https://www.takvim.com.tr/guncel/2026/04/17/isa-aras-mersinlinin-yeni-goruntuleri-ortaya-cikti-polis-uniformasi-silah-ve-etek-bilgisayarindaki-not-beni-fark-etsinler

google translate:

The digital evidence found in the lair of İsa Aras Mersinli, who killed 10 people in the school massacre in Kahramanmaraş, revealed that the brutality was foreshadowed. Online rehearsals of the massacre, weapons training, photos of him posing in a police uniform, and confessions of "multiple relationships" with Argentinian connections exposed the terrifying portrait of the killer's dark world in all its nakedness. Furthermore, a note allegedly found on Mersinli's computer was also recovered. Mersinli, who considered himself a genius, signaled his plan for the massacre with the words, "I want them to feel my existence in this world and the harm I cause, so that they will finally notice me."

AI summary of what happened:

İsa Aras Mersinli was a 14-year-old Turkish student who, on April 15, 2026, carried out a school shooting at Ayser Çalık Middle School in Onikişubat district, Kahramanmaraş, Turkey. He killed 1 teacher and 8 students, wounded about a dozen others, then died at the scene (likely by suicide). He used five pistols and magazines stolen from his father (a police inspector, who was later arrested).
Born male (biological male); some reports describe him as identifying as "non-binary" and using she/they pronouns or a female Japanese name ("Konata"), though Turkish mainstream coverage treats him as male.
The school was a secular public middle school with no religious affiliation or known ties to any sect (e.g., not an imam-hatip religious school).
Why he did it remains unclear officially; reports mention possible mental health issues, heavy screen/gaming addiction, and admiration for figures like Elliot Rodger (incel-related). No known religious motive.

vid - https://x.com/i/status/2045192844143645149