The family of a 74-year-old man who died in a village in Northamptonshire say "he will be greatly missed".
Ralph Baxter died after an altercation involving two dog walkers in Roade on Wednesday, 8 March.
A post-mortem examination found the cause of death was "unascertained", according to Northamptonshire Police.
A 27-year-old man arrested on suspicion of murder following the incident has now been released on bail.
In a statement Mr Baxter's family said getting an honour from the Queen was one of his proudest achievements.
They said: “Ralph lived in Roade with his wife for 35 years and since retiring has enjoyed walking their dog Bertie around the local area.
“One of his proudest moments was receiving an MBE from the Queen for his dedication and commitment to the Civil Service.
“He was an avid supporter of the Saints Rugby Club and rarely missed a match. Ralph was also a keen member of the Labour Party and could always be relied on to 'pound the pavement' at canvassing time.
“He will be greatly missed by his family, colleagues, neighbours and friends.”
Police are continuing to appeal for information, and have already had witnesses come forward.
Detective Inspector Pete Long, from the East Midlands Special Operations Unit Major Crime Team, said: “Detectives are still working around the clock on this very difficult and complex investigation and I am still very keen to speak to anyone who has any information about this incident but has not yet come forward.
“From our initial enquiries, we do believe this to be an isolated incident, and we are continuing to work through all the evidence that has been gathered so far.
“Thank you to all of the members of the public who have come forward so far with their witness accounts and information – it is much appreciated.
“Specialist officers continue to support the family of the 74-year-old man at this awful time and they have kindly asked the media to please respect their privacy while they grieve.”