Subscribe | UPI Odd Newsletter Subscribe EAGLE FORD, Texas, Jan. 13 (UPI) -- A photograph of an alleged flying saucer hovering over a Texas oil field that surfaced on the Internet may be authentic, a UFO investigator says. The photo, which has a July 5 time stamp, appeared on the Mutual UFO (Unidentified Flying Object) Network website last week and was allegedly taken by a security camera at an oil drilling site in Eagle Ford, the San Antonio (Texas) Express-News reported. Advertisement Charles Stansburge, a veteran MUFON investigator, said the photo has passed two authenticity tests. "If it's a prank," Stansburge said, "someone spent a lot of money to stage it. It's not a doctored photo. It's a 60-foot-diameter saucer that's hovering." Other unexplainable sights have been seen in the Eagle Ford-area, including a number of oil workers and nearby residents seeing unidentified lights in the night sky on consecutive days in October. Stansburge said he is sure what his investigation into the photograph and other sightings in Eagle Ford will uncover. "All we can do," he said, "is document what we find." Read More Michigan teens report UFO close encounter British UFO groups losing interest Mystery lights recorded over S.C. UFO spotted over Israel Mystery object seen falling from sky