Officers are making a direct appeal to potential witnesses who may have vital information about the death of off-duty PC Gareth Francis.
The family of an off-duty policeman who died in an attack in Edgeley have described him as a "gorgeous son" who brought "love and laughter."
A murder inquiry is underway after an off-duty police officer died following an assault in Edgeley. Two men have been arrested.
Police investigating the death of an off-duty officer have been given more time to question two suspects.
PC Gareth Francis, 28, died on Sunday after being attacked on a night out.
Police were called to Castle Street, Edgeley, at about 1.20am to reports a man had been assaulted.
He was taken to Stepping Hill Hospital where he later died.
A post mortem has found PC Francis died from head injuries from a single punch.
Two men aged 20 and 21 were arrested and are being questioned. A third man was arrested and bailed after handing himself in to a police station.
Anyone with information should call police on 0161 856 9283.