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Friends and neighbours of a family missing from Luton are shocked that they may have fled to Syria.
Muhammed Abdul Mannan, 75, his wife Minera Khatun, 53, and members of their extended family have not been seen since May after they visited their home country of Bangladesh.
ITV News International Affairs Editor Rageh Omaar reports.
A community leader in Luton believes a local family thought to have fled to Syria may have been "radicalised".
Ashuk Ahmed, who has known the family for around 30 years, said there were suggestions within the community that a woman in the group might have come under external influences. Police have not commented on the claims.
Mr Ahmed said: "The family was under the impression they were travelling to Bangladesh. It was planned as a genuine family visit.
"When they didn't turn up in the UK (other) family members raised the alarm. They were told they may have crossed into Syria.
"The community is in shock. The boys were all running successful businesses."
Photos of some of the 12 members of a family from Luton believed to have fled to Syria have been released by police.
Mohammed Zayd Hussain, 25, 19-year-old Mohammed Toufique Hussain and Mohammed Saker, 31, are the three sons of Abdul Mannan and his wife Minera Khatun.
Mohammed Saker's wife, Sheida Khanam, is also among those missing
The remaining members of the family believed to have fled to Syrai say they are "devastated" by their disappearance.
Bedfordshire Police issued the following statement on their behalf:
We are devastated by the disappearance of these 12 and are very concerned for their safety.
This is completely out of character and we are very worried of the danger they may now be in.
Muhammed Abdul Mannan is elderly and both he and Minera Khatun have health issues.
This just does not make any sense. We can only think they have been tricked into going there, it is no place for elderly or young people.
We would urge any of them to please make contact with us or the police to let us know they are ok.
A one-year-old baby is among the family group that is thought to have fled to Syria after a holiday in Bangladesh.
Muhammed Abdul Mannan, 75, his wife Minera Khatun, 53, of Spencer Road, Luton, their daughter Rajia Khanom, 21, and sons Mohammed Zayd Hussain, 25, Mohammed Toufique Hussain, 19, Mohammed Abil Kashem Saker, 31, his wife Sheida Khanam, 27, Mohammed Saleh Hussain, 26, and his wife Roshanara Begum, 24, along with three children, aged between one and 11, were reported missing after failing to return home from viditing their home country in May.
Police are working with relatives who are still in the UK to trace them and asked anyone with any information about the 12 to call police on 101.
People can also visit www.preventtragedies.co.uk for information and advice for people who may be worried about a friend or loved one.
A family of 12 from Luton could have fled to Syria after going missing, police have said.
The family, including a baby and two grandparents, have not been seen since May after visiting their home country of Bangladesh and are thought to have stopped in Turkey on their way home.
Bedfordshire Police Police said they are investigating and that "there is a suggestion that the family may have gone to Syria".
"They flew back to Istanbul on 11 May and were due to fly back to Heathrow on 14 May," a spokesperson said.
"However they failed to return and were reported missing by a relative in Luton on 17 May."