The U.S. government has received more than 700 reports of unexplained phenomena but have found no proof of extraterrestrial life, the Pentagon’s UFO office confirmed at a Thursday briefing.

A new report from the Pentagon has revealed hundreds of new reports of unidentified aircraft and aerial phenomena, but no indications of extraterrestrial life.

The Pentagon has received hundreds of reports of new UFO sightings, including “several particularly interesting cases,” according to the director of the office that investigates these reports, but reiterated it found no evidence of alien activity.