Missing RAF serviceman's family: How can he vanish in digital age?

The family of an RAF serviceman missing for about a month has made a fresh appeal for information about his disappearance.

Corrie McKeague, 23, has not been seen since early on Saturday 24 September following a night out with friends in Bury St Edmunds, Suffolk.

After leaving a bar, he got a takeaway meal and was seen on CCTV walking with the food before sleeping in a shop front door for a couple of hours.

He was believed to be drunk and was caught on camera at about 3.20am heading to the rear part of some shops but was not seen coming back out.

Speaking to Sky News, his uncle Tony Ringe said his disappearance was "so out of character" and there was "no evidence" he went missing "out of choice".

The CCTV which has been released to the public shows Mr McKeague in a pink shirt and white jeans walking through the streets with his food.

Mr Ringe said he wanted people to remember if they spotted his nephew in other places that night.

He said: "Could you have seen him in a vehicle with other people, not on his own, in a different context? That may help unlock a sighting."

Officers have searched a bin lorry, believing Mr McKeague's black Nokia Lumia phone had been lost or discarded and ended up in the rubbish, but it could not be found.

He told Sky News: "We know when it last left Bury. We know when it arrived at a location eight to nine miles away. The time frame indicated it must have been on a vehicle."

He went on: "What makes this so hard to understand is how someone in a modern British urban town can vanish without any trace by digital or human sight."

It is believed Mr McKeague may have tried to walk the eight miles back to his base at RAF Honington.

He said the police were looking at three possible outcomes - that the serviceman disappeared through choice, he disappeared against his will, or he may be dead.

Mr Ringe did not think Mr McKeague went missing by his own choice because in such instances people often carry out detailed planning for it and he did not think his nephew had done that.

He said police did not believe he was taken by terrorists as there would have been a public statement from them by now.

Mr Ringe said that left "another third party involvement against his will, or he's had some form of accident and he's dead".

Mr McKeague's brother Darroch described his disappearance as "surreal" and he did not know how his family was "getting through it each day", as he urged people to check their gardens in Bury St Edmunds.