UFO investigators are looking into a case when a man said he encountered a low flying, silent, triangle-shaped object along a rural road.
The man in Orrington, Maine, was driving with friends at 11.19pm local time when the incident happened.
He reported it the the US-based Mutual UFO Network (MUFON) which is investigating the growing phenomenon.
In a report to the organisation, which keeps a global database of UFO cases it investigates, the witness said: "We were heading up the Brewer Lake Road and went around an ‘S’ turn and we had noticed these red lights down the road above the dam on the lake."
He initially thought it could be a plane from Bangor International Airport.
He added: "But there was something unusual about the lights.
“This triangular silhouette went from being far off the road and fairly high in the air (500 – 700 feet) to swooping in very close probably 400 feet off the road and 200 feet high.
“The way the object moved down closer was very odd and I was euphoric, but terrified at the same time.