Mysterious orange lights have been spotted "flying in formation" in the night sky.

Paul Lockwood saw four lights moving at a steady speed above Cambridge at 10.20pm on Saturday. The same night, at 10.45pm, a Meldreth resident saw seven bright orange lights moving across the sky.

The sightings are the latest in a spate of similar reports. Earlier this month, a Little Eversden resident told the News of seeing a blindingly bright white light in the sky.

Last month, an "armada" of lights was reported hovering over Huntingdon.

Also, a string of 50 lights was seen over Huntingdon last month - but it is thought they were simply a chain of Chinese lanterns released at a memorial ceremony.

Mr Lockwood, of Brampton Road, Cambridge, believes the objects could have been military jets, unlike any he'd seen before.

He spotted them after his daughter Charlotte asked if they could look for Venus.

Mr Lockwood said: "Just coming up over the horizon were two orange lights close together.

"They kept a steady progress to the east. They were a sodium lightcoloured orange, moving at speed, like really fast aircraft. A third came up following behind on the same trajectory, and a fourth. They disappeared off to the east."

Mr Lockwood, a computer database consultant, added: "My guess is they are military aircraft but they don't look like any aircraft I have ever seen."

He said the single point of orange light was "not what you expect on an ordinary civilian aircraft".

The Meldreth sighting, reported on the UK UFO Sightings website, refers to a "bright orange/red light moving up and down slowly", with six other similar lights appearing.

Brian Lister, chairman of the Cambridge Astronomical Association, said: "There are many sightings each week, I can't believe they are all Chinese lanterns."

He said possible explanations for lights in the sky included the International Space Station and reflections from communications satellites.

He also referred to earthquake lights, or earthlights, produced by seismic activity.