Belgian UFO wave

The Belgian UFO wave began in November 1989. Reports were filed, most many weeks after the events. Many of the reports related a large object flying at low altitude. Some reports also stated that the craft was of a flat, triangular shape, with lights underneath.

The Belgian UFO wave peaked with the events of the night of 30–31 March 1990. On that night, one unknown object was tracked on radar, and two Belgian Air Force F-16s were sent to investigate, with neither pilot reporting seeing the object. No reports were received from the public on the date. But over the next 2 weeks reports from 143 people who claimed to have witnessed the object were received, all of them after the event. Over the ensuing months, many others claimed to have witnessed these events as well. Following the incident, the Belgian Air Force released a report detailing the events of that night.