Police have today (10th February) arrested three more people in connection with the murder of a teenager from Birmingham.
Two 17-year old boys and an 18-year old man were detained overnight on suspicion of murder, after firearms warrants were conducted at three homes across the city in the early hours of this morning.
The three are in custody and will be questioned today. West Midlands Police officers said a 21-year old was also arrested in the Metropolitan Police area yesterday, on suspicion of assisting an offender.
Keon suffered gunshot and stab wounds in Linwood Road in Handsworth on Thursday 21 January. Two teenagers, a 14-year-old boy from Birmingham and 15-year-old boy from Walsall, have since been charged with his murder.
This remains a complex but fast moving investigation, and we are making steady progress.
The whole community has felt the pain of losing a 15-year-old boy with his life in front of him. "These charges are a significant milestone in our investigation but we continue to leave no stone unturned to get justice for Keon.
Keon's mother spoke out earlier to appeal for help bringing her son's killers to justice.
Sharmaine Lincoln says "it doesn't make sense to us as to why anyone would want to harm him", as she spoke out for the first time.
She spoke of the horror of how she heard the gunshots, saying her first instinct was to think, "Where's my son?"
Keon was attacked by a group of youths in Linwood Road, Handsworth on Thursday afternoon (Jan 21).
He was rushed to hospital just after 3.30pm but he died a short time later.
A post mortem examination revealed Keon died from a gunshot and stab wounds.
A video montage of 15 year old Keon Lincoln
Sharmaine Lincoln pleaded with the local community to "help us to understand why this has happened".
Police are urging anyone with information to contact them via their website or by calling 101 or anonymously to Crimestoppers on 0800 555 111.