**[OpenAI Sued Over ChatGPT's Alleged Involvement in Murder Case]** BlockBeats reports that on December 21, an heir in Connecticut, USA, filed a lawsuit against OpenAI and its partner Microsoft, claiming that ChatGPT reinforced the delusional beliefs of the murderer, Stein-Erik Soelberg, prior to the murder. This led Soelberg to kill his mother at home and subsequently commit suicide. The lawsuit alleges that ChatGPT exacerbated Soelberg's paranoia, fostered his emotional dependence on the chatbot, and strengthened his belief that he could only trust ChatGPT, portraying those around him—including his mother, police officers, and delivery drivers—as enemies. In a statement, OpenAI said it is reviewing the lawsuit and will continue to improve ChatGPT's ability to recognize emotional distress, de-escalate conversations, and guide users to seek real-world support. OpenAI also disclosed that over 1.2 million ChatGPT users discuss suicide each week, with hundreds of thousands showing signs of suicidal intent or mental illness. The interaction between AI chatbots and vulnerable users is expected to face broader scrutiny.