The Bradford sisters missing with their nine children were stopped from leaving the UK earlier this year, ITV News has learned.
It is understood the family were prevented from travelling to Saudi Arabia in March and their flights were rebooked for May.
There is no suggestion the women were intending to travel to Syria at that time and police are trying to work out when the trip was planned.
UK Editor Rohit Kachroo tweeted:
ITV News learns the missing Bradford families were stopped from travelling to Saudi Arabia in March. Flights were rebooked for May
No suggestion the women were intending to travel to Syria when they tried to leave UK. Police now trying to work out when trip was planned
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.