The Bradford sisters missing with their nine children were stopped from leaving the UK in March, ITV News has learned.
Their trip to Saudi Arabia was rebooked for May but there is no suggestion they were intending to travel to Syria at that time. Police are now trying to work out when the trip was planned.
A senior Islamic figure has called on Muslims to stop "endlessly pointing the fingers at others" and said communities should take responsibility for radicalisation.
Manzoor Moghal, Chairman of the Muslim Forum, said eagerness to pass the buck was "hypocritical" and allowed extremism "to flourish".
His comments come after two husbands made an emotional appeal to their wives who are believed to have fled to Syria to return to Bradford.
Writing for the Daily Mail, Mr Moghal said: "Instead of endlessly pointing the finger at others, Muslim communities should face up to their own responsibilities.
"Meanwhile, for misguided mothers like the Dawood sisters, the Isis drive for a caliphate seems to hold out the prospect of raising children in a pure Muslim society, untainted by any western influences. This is the kind of nonsense that other Muslims have to confront. It is no use blaming the police or the Government or foreign policies.
"This is a Muslim problem - and British Muslims have to address it rather than abdicating their responsibilities."
Speaking from Pakistan, one of the husbands of the missing Bradford thought to be heading to Syria has told ITV News of his worry.
Here's what we know about the Bradford family of 12 who are feared to be travelling to Syria.