Manchester Grammar student Yousef Makki died inside a grapple with Joshua Molnar, now 18, in Hale Barns, Cheshire.
The Independent Office for Police Conduct (IOPC) stated it’d stopped its inquiry in to the force’s actions.
IOPC regional director Amanda Rowe stated it’d found “no potential misconduct by individual officer”.
“We assessed GMP’s own overview of its murder analysis and acknowledge numerous changes to the procedures is going to be implemented because of learning recommendations made,” Ms Rowe added.
The IOPC had launched two investigations Body into Greater Manchester Police (GMP) an additional involving Cheshire Police – captured.
Law enforcement watchdog stated its analysis into Cheshire Constabulary was ongoing.
The scholarship pupil was stabbed by uncle, former public schoolboy Mr Molnar, throughout a fight in upmarket Hale Barns on 2 March.
He stated it had been self-defence and it was found innocent of murder and wrongful death with a jury following a trial at Manchester Crown Court in This summer exactly the same year.
He accepted laying to police and having a knife and it was given 16 several weeks in child custody.
He was launched in Feb 2020.
‘Reviewing our actions’
Following the situation Mr Makki’s family stated these were “very” unhappy with investigations transported out by GMP and Cheshire Police.
Both forces had referred themselves towards the IOPC.
Assistant Chief Constable Mabs Hussain stated: “It’s important we conducted an intensive overview of our analysis in to the tragic conditions surrounding Yousef’s dying, that the IOPC has recognised.
“This remains a hard time for that Makki family and that i hope this brings some reassurance in our dedication to reviewing our actions.”