The Lonnie Zamora incident was an alleged UFO close encounter which occurred on Friday, April 24, 1964, at about 5:50 p.m., on the outskirts of Socorro, New Mexico. Several primary witnesses emerged to report their version of the event, which included the craft's approach, conspicuous flame, and alleged physical evidence left behind immediately afterward. Lonnie Zamora, a Socorro police officer who was on duty at the time, claimed to have come closest to the object and provided the most prolonged and comprehensive account. Some physical trace evidence left behind—burned vegetation and soil, ground landing impressions, and metal scrapings on a broken rock in one of the impressions—was subsequently observed and analyzed by investigators for the military, law enforcement, and civilian UFO groups.
The event and its body of evidence is sometimes deemed one of the best documented and most perplexing UFO reports. It was immediately investigated by the U.S. Army, U.S. Air Force, and FBI, and