A San Diego resident in California posted on Twitter footage of large triangular objects hovering in house.
Mirror notes that while it looks like the videographer just filmed a light in his back yard and tried passing it off as a UFO, the British daily points out that the clip has similarities to previous reports of similarly shaped objects recorded.
Three of these sightings have been probed by the British government and included in the Unidentified Aerial Phenomena (UAP) of the UK Defence Region executive summary.
The first sighting was on March 30, 1990, which showed a black triangle over Eupen, Belgium. The second was on March 30, 1993, also a black triangle moving at a low speed from Cornwell to Shropshire at 41 mph. It took the second craft six hours to move between the two locations.
The third incident was record on March 13, 1997 over Arizona, showing several UFOs that also appeared like black triangle. The fourth was tweeted on Monday by @BIGkidGeorgie.
The executive summary notes a higher number of UAPs reported over the past 25 years. However, it points out that there are also more objects in the sky that are misreported as UAPs. The report was ordered by Winston Churchill in July 1952.
The report states that there was no evidence to link UAPs with any particular country, the UAPs are not hostile or under any type of control - save for natural physical forces - and that "meteors and their well-known effects and, possibly some other less-known effects, are responsible for some UAP."