We remain committed to fully investigating the circumstances surrounding the murders of PC Fiona Bone and PC Nicola Hughes.
As we have said previously, this remains a complex and sensitive investigation and we continue to ask the public to search their conscience and urge anyone who has any information to contact us.
Officers from Greater Manchester were joined by colleagues from other UK forces. Hear what they had to say at PC Nicola Hughes's funeral.
Thousands of police officers from across the UK joined members of the public for the funeral of PC Nicola Hughes in Manchester.
PC Nicola Hughes who was shot dead with her colleague Fiona Bone in Hattersley will be laid to rest today.