Officers attended Wilberforce Road in the Sandgate area following a report of an injured man walking by the roadside at around 3.45pm on Thursday 29 October 2020.
The man aged in his 20s was taken to a local hospital for treatment.
PC Paul Wilson said: ‘It is suspected the man may have been assaulted but a number of enquiries are ongoing to establish the circumstances of the incident.
‘We would like to hear from anyone who saw the man or has any information as to how he came by his injuries.’
Witnesses should call Kent Police on 01843 222289 quoting 46/194252/20.
You can also contact the independent charity Crimestoppers anonymously by calling 0800 555 111 or using the anonymous online form at Crimestoppers-uk.org