? Saturday, August 5 - between 10.08am to 10.12am, Peter Wrighton is seen on CCTV buying a few small items in Kenninghall Post Office. Afterwards, he drives in his red Skoda to woodlands in East Harling to walk his two dogs. The 4.5-mile drive usually takes about 15mins. At 10.46am, Mr Wrighton's body is discovered. Police arrive at the scene to recover the body and do forensic analysis. The death is treated as unexplained, with an animal attack considered as one of the possible causes.

Eastern Daily Press: Police press conference for the East Harling murder. Left to right, chief superintendent Mike Fawcett, detective superintendent Andy Smith and corporate communications manager Nicola Atter. Picture : ANTONY KELLYPolice press conference for the East Harling murder. Left to right, chief superintendent Mike Fawcett, detective superintendent Andy Smith and corporate communications manager Nicola Atter. Picture : ANTONY KELLY (Image: archant 2017)

? Sunday, August 6 - the results of a post mortem examination confirm Mr Wrighton was murdered.

? Monday, August 7 - police announce that they have launched a murder investigation and begin carrying out house-to-house enquiries.

? Tuesday, August 8 - residents are urged to check CCTV and dash-cams for any footage that might be useful to police. Officers search bins and gardens for the murder weapon.

? Wednesday, August 9 - the victim is named as Peter Wrighton, with his family paying tribute to a 'lovely, gentle' man.

Eastern Daily Press: Peter Wrighton, who has been named as the 83-year-old man who was stabbed to death while walking his two dogs in East Harling, Norfolk. Picture Norfolk Constabualry.Peter Wrighton, who has been named as the 83-year-old man who was stabbed to death while walking his two dogs in East Harling, Norfolk. Picture Norfolk Constabualry.

? Thursday, August 10 - CCTV footage of the last moments of Mr Wrighton's life is released, as police release details of three people they wish to speak to in connection with the attack.