Police searching for a missing RAF serviceman have explored a section of railway line and briefly closed a section of A-road to search along it nearly a fortnight after he was last seen.

Corrie McKeague, 23, disappeared 12 days ago after going out for the evening with friends in Bury St Edmunds, Suffolk.

British Transport Police have helped Suffolk Police with searches along the railway line from Bury St Edmunds, and a section of the A1101 between the Fiveways roundabout at Barton Mills and Icklingham was closed while officers conducted further searches along it.

Work has also been carried out along the A11, with all searches aiming to uncover items which may give clues as to his whereabouts.

A trawl of a bin lorry earlier this week failed to locate Mr McKeague's phone, which is thought to have been lost or discarded.

His mother Nicola Urquhart, of Dunfermline, Scotland, made an emotional appeal for information on Monday but a number of potential witnesses seen on CCTV have yet to come forward.

Mr McKeague, based at RAF Honington, was last seen on CCTV at about 3.20am on Saturday September 24.

He was walking alone eating fast food in Bury St Edmunds, Suffolk.

Police said people were walking in the town centre and driving through around this key time and officers are renewing appeals for anyone who may have been there to come forward.

Temporary Superintendent Kim Warner said: "We are taking time to do the searches and to go through hundreds of hours of CCTV from town, business and individual sources.

"We know from CCTV that there are still a number of people who were in the area of Brentgovel Street, Short Brackland and the town centre around and after the crucial 3.20am time on Saturday September 24 who have still not come forward to police and we would urge them to get in touch.

"You may think that you didn't see anything that will help, but your account could hold clues to what has happened and may be important in piecing this all together.

"Please call us. We need to know everything as we continue to work to trace Corrie."

Police are continuing to appeal for three young people seen at Short Brackland around 4.20am on Saturday September 24 to come forward.

The three are all said to be aged between around 16 to 18, one a woman described as being white, of quite slim build, possibly with blonde hair, wearing either a dark green or navy blue jumper-style top, and two men, one wearing a hooded top.

Mr McKeague is believed to have been wearing a pink Ralph Lauren polo shirt and brown suede Timberland boots and is described as white, 5ft 10in, of medium build, with short light brown hair.