A man has been arrested as part of the investigation into missing Fife serviceman Corrie McKeague.

The 26-year-old is being held by police on suspicion of attempting to pervert the course of justice.

Suffolk Police said the man was being questioned over information given to officers leading the inquiry into Mr McKeague's disappearance.

His mother Nicola Urquhart, who is a family liaison officer with Police Scotland, said "it's a very difficult time for the family".

She added: "I'm trying not to read anything into it but I have a million questions. The wording of the charge is very important, he has said something in a statement to deliberately confuse the police.

"Why? Does he know something or is he just attention seeking? Whatever it is, it must be quite big for the police to arrest him."

Detectives stressed the man in custody was not the driver of a bin lorry that collected rubbish from the area in Bury St Edmunds where the 23-year-old gunner, from Dunfermline, was last seen on September 24.

Later on Wednesday, Suffolk Constabulary confirmed the suspect had been granted bail and is due to return to police on April 13, while further enquiries are made.

The development came as preparatory work continues on a landfill site at nearby Milton, where a police search is due to start within a week.

Officers also issued fresh footage of two people seen on foot in the "horseshoe" area of Bury St Edmunds around the time of the last confirmed sighting of Mr McKeague.

Police said the pair were seen on CCTV between 3.20am and 5.20am on Saturday, September 24.

The last CCTV sighting of Mr McKeague showed him walking from a shop doorway and into a horseshoe-shaped area in Brentgovel Street, with no sign of him emerging.

CCTV shows a waste lorry made a collection in the area shortly after the last confirmed sighting and the vehicle's route appeared to coincide with the movements of Mr McKeague's phone but police said its load weighed less than 33lb (15kg).

Detective superintendent Katie Elliott said: "We are continuing to make progress on the investigation and we will be starting the landfill site search as soon as the preparatory work is complete.

"We have been carrying out a lot of enquiries behind the scenes and our work continues to find the truth about what happened to Corrie."