Triangle UFO cases are on the rise nationally this past month and California Mutual UFO Network (MUFON) investigators are piecing together their most credible reports as they search for a pattern, according to national reporting at MUFON and California MUFON State Section Director Steve R. Murillo.

The most recent triangle case is an April 7, 2011, report where the witness says a UFO was sighted three days in a row, with the most recent triangle sighting on April 6, in MUFON Case # 28577.

The April 4 sighting included a "very bright, star-like object" hovering at about 1,000 feet. The object was described as "circular with rotating white, blue, green and red lights around the sides of it." This object was spotted west of the quarry in Cupertino and flew into the Santa Cruz mountains. Cupertiono is an affluent suburb in Santa Clara County, population 58,302, and is worldwide headquarters for to Apple, Inc.