Kadiza Sultana, 16, Shamima Begum, 15, and Amira Abase, 15
Kadiza Sultana, 16, Shamima Begum, 15, and Amira Abase, 15, fled to Syria, sparking fears that five more students from their school were planning to join IS. (Met Police)

Five teenage girls from the same school as three ISIS runaways have been banned from leaving the UK, over fears they would also join the terror group.

In February, Kadiza Sultana, 16, Shamima Begum, 15, and Amira Abase, 15, left their east London homes, bound for Syria.

At the time, police also raised concerns about five other girls at the Bethnal Green Academy in east London, two of them aged 15 and 16.

A judge has now made the teenagers wards of the court, following an application from social services at the London Borough of Tower Hamlets. He made orders for their passports and those of a number of adults involved in their care to be seized.

He said there was evidence to suggest family members in the case had not been "full and frank" with social services, and that the girls were becoming "more radicalised".

Mr Justice Hayden, who initially directed that the girls could not be identified, changed his order banning identification of the girls, after the press appealed that identifying the school would be in the public interest and that parents of other children at the school "had the right to know."

Barrister Christopher Barnes, for Tower Hamlets Council, and barrister Jennifer Carter-Manning, for the Metropolitan Police, argued against naming the school attended by the five girls.

They said revealing the name would pose a risk of the teenagers' identities being revealed, with a detrimental impact on the girls. However, it was established that the staff and pupils at the academy were already likely to know who the five pupils were.

The judge has continued to analyse the girls' cases at further hearings throughout this week and has heard evidence from counter-terrorism specialists at the Metropolitan Police.

Mr Justice Hayden said that sometimes the law had to intervene to protect young people from themselves. Earlier this month, he barred a 16-year-old boy from travelling abroad by making him a ward of the court. The boy's two elder brothers had already been killed fighting for militants in Syria.

He also prohibited the identification of the boy, but revealed that the local authority which had applied to have him made a ward of the court, was Brighton and Hove City Council.