Crewe detectives are appealing for witnesses after an altercation outside a pub in Crewe.
At around 7.15pm on 7 August 2012 an altercation between two men took place outside the Eight Farmers Pub which is close to the car park of the Co-Op in Parkers Road.
A 28-year-old man had part of his ear bitten off during the incident.
DC Mike Rushton said: "CCTV showed that there were plenty of people around at the time, especially in the Co-Op car park, watching the altercation.
"In order for us to establish exactly what had taken place and to progress with our enquiries; we would urge anyone who witnessed this to contact us on 101 quoting incident number 857 of 7 August 2012."
A 23-year-old man from Nantwich has been arrested for a section 20 assault and released on police bail.