A man is holding a girl in an armed siege at a house in Kidlington, Oxfordshire, Thames Valley Police have confirmed.
The girl's twin sister has been released, the force added.
More top news
Two young women took on a challenge of the "mind and heart" to become first-ever Afghan women's team to conquer a 250km endurance race.
Despite some of the toughest laws on domestic abuse in the world, murder by an intimate partner in South Africa is at an all-time high.
David Cameron wants to clear out international corruption, but is sweeping his own backyard first.