Two men have been arrested for questioning in connection with the murder of 15-year-old schoolboy Thomas Devlin in north Belfast last month.
Thomas was fatally stabbed in the back as he and two friends walked home from a visit to the local shop along the Somerton Road on 10 August.
An 18-year-old friend of Thomas was also stabbed in the attack, but was not injured seriously. The third boy, aged 16, escaped injury.
In the weeks after the killing, detectives arrested a number of people in connection with the case, but all have been released without charge.