Family friends say the 15-year-old girl, from Bristol, had been viewing extremist material on her phone and computer.
Sky News takes a look at the stories making a splash on the front pages of Wednesday’s national newspapers.
Sky’s Joey Jones looks at the key words and phrases the PM might use in his address to the Tory conference in Birmingham.
The impact of illegal drugs and prostitution on the British economy has been revealed for the first time.
The jets hit a heavy weapon position and an armed truck in the first military action since MPs voted to back aerial attacks.
The Magic Radio presenter is questioned by police investigating four allegations of sexual assault against two women.
Speaking publicly for the first time since her husband was captured, Barbara Henning has a direct message for IS militants.
Denbigh Town are looking for their third manager in less than a year after the resignation of Terry Ingram.
The former assistant to ex-Cefn Druids boss Huw Griffiths quit on Monday after just ten competitive games in charge – he arrived at Central Park in June, replacing Richard Williams-Cooke who had guided Denbigh to the Huws Gray Alliance.
Ingram claimed increasing work commitments led to his decision to go. On the field, Town had won four of their first seven league outings, but suffered a shock League Cup exit to early strugglers Llandrindod Wells. He last took charge on Friday night, when a 4-1 defeat to Porthmadog saw Denbigh slide down the table to tenth.
In a statement on Monday, Ingram said: ”My day job has taken over and I can’t give the same commitment that I’m asking my players to give, so in the interests of them and the Club I must step down. This is a great Club with a great Chairman so if I can play a part in its future development I will do so”.
Assistant manager Dave Taylor has also left the club. For the moment, reserves boss Elfed Lloyd and captain Max Peate have taken caretaker charge – they visit Penycae on Saturday.
Police investigating a spate of arson attacks in Rhyl at the weekend have arrested a woman.
The 33 year-old was questioned on a total of five counts of starting deliberate fires in the town centre and West End areas during the early hours of Sunday morning. She has been released on bail pending further inquiries.
In one instance, a fire started in a wheelie bin spread to a building on the High Street, causing heat and smoke damage. Detectives are still appealing for witnesses to come forward.
David Cameron speaks of his commitment to the NHS as he pledges to make sure family doctors’ surgeries open seven days a week.