Two dead, two critically injured in Chicago school

At Mark Twain Elementary School in Garfield Ridge, Chicago, around 3:40 p.m. two adults were found shot inside the building, with one report suggesting they were custodians. Police recovered a firearm at the scene and described the incident as stemming from a confrontation or disagreement between two custodians, though details remain under investigation. Fire officials indicated two people were transported in critical condition to area hospitals, with some outlets later reporting fatalities. Police tape and a large emergency response were visible at the 5100 block of South Lotus Avenue, and the school was not in session with students due to return on Aug. 24. Authorities have not released identifications or detailed circumstances, and investigators are continuing to gather information. The story is developing as multiple outlets update findings and clarify what happened.