Girl, 15, and six others arrested after teenager stabbed to death - The Telegraph

1. Girl, 15, and six others arrested after teenager stabbed to death  The Telegraph
2. Seven arrested on suspicion of murder after teenager stabbed to death in Derbyshire  The Independent
3. Seven people arrested after fatal stabbing of 18-year-old in Derbyshire  The Guardian
4. Seven people arrested after 18-year-old stabbed to death  Sky News