Martyn Blake fired a single shot at 24-year-old Mr Kaba in September 2022, after a police convoy followed a vehicle that had been linked to a shooting in Brixton. Mr Kaba later died in hospital.
The police watchdog had announced misconduct proceedings into Blake, saying there was sufficient evidence to indicate he could have breached professional standards regarding his use of force.
After the Independent Office for Police Conduct investigation was paused in January, it has now announced that disciplinary action “was no longer justified and any proceedings should be withdrawn”.
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