The girls took advantage of lax regulations governing international air travel for unaccompanied minors, prompting a major search in Turkey.
Their disappearance was at a time when hundreds of Isis sympathisers had left for Syria to join extremists and Brits feared they posed a terrorism threat upon their return.
Their frightened families issued urgent pleas begging the girls – straight A students – to return home, to no avail.
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They also said there were no signs that their girls were interested in extremism or had planned to go abroad.
It was revealed that cops had spoken to Shamima, Amira and Kadiza after a close pal of theirs from the academy – a 15-year-old girl – had run away to Syria.
Authorities were criticised for failing to alert their families as, unbeknown to them, cops gave the trio letters to take home, asking for counter-terrorism detectives to take statements about their runaway friend.
There were also fears that the teens had been "groomed" online to become Jihadi brides.
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