Police were called at 8.45pm on Thursday, June 26, to reports of gunshots in Great Cambridge Road.
Officers and the London Ambulance Service attended and found Keanu suffering gunshot injuries.
He was treated at the scene before being taken to a nearby hospital.
Despite the efforts of medical staff, he later died from his injuries.
Anais King, 18 of no fixed address was arrested on Sunday, August 3, and has been charged with perverting the course of justice.
She is due to appear at Highbury Magistrates Court today (August 5).
Two other people have previously been arrested and charged in connection with Keanu’s murder.
A 17-year-old boy, who cannot be named for legal reasons, was arrested on June 29 and charged on June 30 with murder.
Eliezer Mbike, 25, of Oulton Road, Tottenham, was arrested and charged on June 30 with perverting the course of justice.
A trial will take place at the Old Bailey on May, 18 2026.
A 39-year old man was arrested on Thursday, 24 July on suspicion of conspiracy to murder.
He has since been bailed to return in September pending further enquiries.
Anyone with information about the incident is asked to call police on 101 or message @MetCC on X quoting CAD 8393/26JUN.
To remain anonymous, contact the independent charity Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.