Police are appealing for information to trace a missing family of seven who they believe have travelled to Turkey.
Imran Ameen, 39, his wife, Farzana Ameen, 40, and their five children aged between five and 15 were last seen on October 5.
The family, from Bradford, were reported missing to police on Tuesday.
West Yorkshire Police's Assistant Chief Constable Russ Foster said: "We would urge anyone with information about the family's whereabouts to come forward and speak to police so the family can safely return to the UK.
"Any piece of information, no matter how small, could help the UK or overseas authorities to locate the family so that they can be safely returned home to their loved ones."
Police said they were continuing with their inquiries and were working with relatives who are still in the UK.
They said they were working with the Turkish authorities and were primarily concerned with the safety and welfare of the young children and the safe return of the family.
Earlier this year, Khadija Dawood, 30, Sugra Dawood, 34, and Zohra Dawood, 33, also from Bradford, went missing after going on an Islamic pilgrimage to Saudi Arabia along with their nine children.
It is believed they entered Syria to join the Islamic State group.