Eagle-eyed believers have told of spooky sightings of UFOs flying high in the sky above Renfrewshire.

Two residents in Elderslie contacted a leading UFO website to tell how they spotted glowing orange-coloured objects moving around as they tailed planes coming in and out of Glasgow Airport.

Now UFO experts are urging Buddies to be on the alert amid suggestions that aliens could be keeping an eye on Paisley.

Brian Vike, director of the HBCC UFO Research organisation, told the Paisley Daily Express that sightings of unidentified flying objects are becoming more common in Renfrewshire.

He said: "This year, there appears to have been an increase in sighting reports coming in and many of these are of orange-coloured objects or lights.

"In Renfrewshire, there are sightings being reported but, for each case, there may be many more UFO sightings not being reported for many reasons.

"People are afraid that their personal information will be made public and then the ridicule starts and, at times, it can become frustrating and down right annoying for the person who is just reporting what they saw."

One of the Elderslie residents who contacted Brian's website told how they were fascinated by what they saw.

"We saw the orange moving objects quite far apart outside the front of my home and went to the back of the house to watch them," said the eyewitness. "They were about a mile from Glasgow Airport and were able to observe planes arriving and taking off from the airport at the same time but these two objects were much higher and moving quite slow.

"These did not have landing lights on them, just an orange glow."

Brian believes the truth is out there - and he has advice for anyone who does see something unusual in the sky above Renfrewshire.

He said: "When folks witness something strange in the day or night sky, they should make note of the time and the day it was observed.

"Also, it is good to know if the sighting took place around a military base or test area or an airport.

"I guess it boils down to common sense. Record as much detail about what a person observes and certainly file a report to someone who works in the UFO field."

A spokesman for the Ministry of Defence said they had no reports of suspicious activity above Glasgow Airport.

He added: "The MoD examines reports solely to establish whether UK airspace may have been compromised by hostile or unauthorised military activity.

"Unless there is evidence of a potential threat, there is no attempt to identify the nature of each sighting reported."