24 year old Dmitry Hrynkevich died on October 2nd in University Hospital Kerry two days after being seriously assaulted in Killeen Wood.
The Russian native who grew up in Killarney and Tralee was discovered in the garden of the house he was living in by Gardai.
Two men, one in his 30s and the other in his 20s, were arrested in connection with the investigation but were later released without charge.
A file was sent to the Director of Public Prosecutions.
A Garda spokesperson said the investigation into the murder is continuing.