Greater Manchester Police (GMP) have suspended eight officers and restricted another, following a report of alleged racial discrimination.
Seven of the suspended officers are from Bury and one is from Rochdale but was working in Bury at the time of the allegations.
This follows the force suspending five officers and placing two officers on restricted duties; all from the Bury district on July 17.
Temporary officers have been relocated to Bury to cover duties in a bid to minimise disruption within the district.
GMP made a mandatory referral to the Independent Office for Police Conduct (IOPC) in relation to both of the case. The IOPC is investigating the first report and has reviewed and referred the second incident back to Greater Manchester Police to investigate.
Head of GMP’s Professional Standards Directorate, detective chief superintendent Mike Allen said: “The reports we have received are deeply concerning and I hope to reassure the community of Bury, the wider public, and the GMP workforce that a full and thorough investigation is being conducted into these matters.”