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.
The missing Bradford 12 are all 'doing okay', according to one of the sisters who has made contact with family members back home.
It is thought at least one of the 12 is now in Syria but it remains unclear where the others are at this moment.
Tonight, it emerged the family were stopped from getting on a flight to Saudi Arabia in March but police will not confirm the reasons behind it.
ITV News UK Editor Rohit Kachroo reports:
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.