Police have named the 15-year-old killed in a Birmingham park yesterday evening as Hassan Mahmood.
The teenager was stabbed near Oaklands Park in Wash Lane, South Yardley, shortly before 6:00pm.
Two 16-year-old boys from Birmingham remain in custody this evening after being arrested on suspicion of murder yesterday. Two other teenagers aged 15 and 17, who were also arrested, have been released without charge.
The two 16-year-olds, a 15-year-old and a 17-year-old were arrested yesterday evening after a 15-year-old local boy was stabbed and later died following what officers believe to have been a fight between two groups of young people.