Washington (AFP) – The Pentagon has acknowledged funding a secret multi-million dollar program to investigate sightings of UFOs.

The shadowy program ended in 2012, according to the Defense Department, but the New York Times reported that it is still up and running — with officials continuing to study incidents brought to their attention by US military service members while performing their regular duties at the Pentagon.

The so-called Advanced Aviation Threat Identification Program operated from 2007 to 2012 and had $22 million a year in funding tucked away in the Pentagon’s gargantuan budget, the Times said, quoting program participants and records.

The program yielded documents describing sightings of unidentified flying aircraft that apparently moved very fast with no visible sign of propulsion or hovered with no apparent means of lift, the Times said.

Program officials also examined video of encounters between unknown objects and US military aircraft.

This included one released in August of a whitish oval object about the size of a jetliner, being pursued by two Navy fighter jets from an aircraft carrier off the California coast in 2004, the paper added.

The Department of Defense said in a statement the program is now over.