- 2 updates
Twin teenage girls who are thought to have travelled to Syria are "deeply religious Muslims", police understand.
It is understood an older brother has joined the extremist militant group Islamic State of Iraq and the Levant (Isis), and one line of inquiry is that the girls may have flown out to join him.
The girls, from a large Somalian family, flew from Manchester International Airport to Turkey which borders Syria where the civil war involving Muslim militants is raging.
Greater Manchester Police said the pair had been in contact with relatives since their departure.
The twin teenage girls who are thought to have travelled to Syria are "clearly posing a threat to themselves and potentially the community," police investigating their disappearance said.
Detective Chief Superintendent Tony Mole, head of the North West Counter Terrorism Unit which is leading the investigation, said: "First, I want to stress that the welfare of these two teenagers is our overarching priority."
He added: "Two 16-year-old girls left the UK on 26 June 2014 and we believe that they have since entered Syria."
At this stage he said police don't know the location of the girls, whom ITV News understands are called Salma and Zahra Halane. Officers were trying to establish who they are with.