On this day in conspiracies

The chartered Douglas DC-6B SE-BDY, named Albertina, flies a long, deliberately indirect night route under near-radio-silence to avoid hostile aircraft. Shortly after midnight, on approach to Ndola, it descends into forest about nine miles from the runway and is destroyed. Fifteen of the sixteen aboard, Hammarskjold among them, die at once; the acting security chief, Sergeant Harold Julien, is pulled alive from the wreck but dies of his injuries days later.

The army occupies the campus of the National Autonomous University (UNAM), arresting students and staff. The crackdown escalates through late September as the government moves to crush the movement before the Games open.

The Phalange leave the camps and journalists and relief workers enter, revealing streets of bodies. International outrage is immediate; the scale of the atrocity, carried out in Israeli-held territory, dominates world coverage.

The first wave of letters is postmarked in Trenton, New Jersey and mailed to news organizations, including NBC News anchor Tom Brokaw and the New York Post, and to American Media Inc. in Florida. The powder inside is later identified as the Ames strain of Bacillus anthracis.

The EPA issues a public notice of violation of the Clean Air Act, stating that roughly 482,000 Volkswagen and Audi 2.0-liter diesels sold in the US since 2009 contain software that circumvents emissions standards, with on-road nitrogen oxide output up to about 40 times the legal limit.

The New York Times publishes a detailed investigation by Ronen Bergman and Farnaz Fassihi reconstructing the operation: a roughly one-ton robotic apparatus built around a machine gun, smuggled into Iran in pieces, mounted in a pickup, aimed with AI and facial recognition, and fired remotely from an undisclosed location far from Iran.