Officers investigating the death of Keelan Wilson have arrested a teenager on suspicion of murder.
The 16-year-old was arrested from his home address in Wolverhampton and will be questioned today.
The arrest comes after an anniversary appeal for information.
Police and paramedics were called to reports of groups of youths fighting on Langley Road on May 29.
Keelan was rushed to New Cross Hospital, but was confirmed dead a short time later.
A post-mortem examination revealed he died from stab wounds.