The mother of missing Ben Needham has refused to believe the police theory that he was killed by a digger on a Greek island.
His mother Kerry said 'we must keep searching' ahead of the 30th anniversary of his disappearance on the island of Kos on July 24, 1991.
Police believe Ben died on the day he went missing as a result of an accident involving 'heavy machinery' as he played outside his grandparent's house.
He was staying at his grandparents' farmhouse on the Greek island when he vanished but Ms Needham believes her son is still alive.
She told the Daily Mirror: 'I still have that hope that South Yorkshire Police are wrong.
Ben Needham (pictured) went missing from his grandparents' farmhouse on Kos in 1991
'And while there is no evidence to show me, I have to believe he is still alive. There's not a single thread of evidence to say otherwise.'
She added she feels 'stuck' in 1991 and has devoted three decades to the search of her son. She said: 'I've never had any dreams or goals apart from finding Ben.'
Ms Needham had moved from Sheffield to start a new life with her family in Greece when she went to work and left her son with his grandparents. She never saw him again.
South Yorkshire Police twice sent a team to Kos, the last time after a witness came forward to say that, before his death, digger driver Konstantinos 'Dino' Barkas confessed to killing Ben.
Forensic scientists said in 2018 chemical traces which indicate the presence of decomposing human blood were found on a toy car and a sandal which they believe belonged to Ben
Police digs on land at the farmhouse failed to uncover remains and tests on a toy car and scrap of leather sandal did not find a DNA match with Ben.
It was this that made Ms Needham doubt the digger theory, adding that 'things don't add up'.
Detectives from South Yorkshire Police carried out a three-week search of Kos in 2016.
Speaking at the time, then Detective Inspector Jon Cousins said: 'My team and I know that machinery, including a large digger, was used to clear an area of land on 24 July 1991, behind the farmhouse that was being renovated by the Needhams.
'It is my professional belief that Ben Needham died as a result of an
