One person is currently serving a life sentence in connection with the murder.
An Garda Síochána has renewed an appeal for information in connection with the murder of Andrew Burns in 2008.
Shortly after 7pm on Tuesday 12 February, 2008, the 27-year-old received a number of gunshot wounds and was later discovered on a roadway close to Donnyloop Church in Castlefin, Donegal, before being pronounced dead.
To date, one person has been convicted and is currently serving a life sentence.
Gardaí believe, however, that a number of people were involved in this murder.
"An Garda Síochána in Donegal would like to directly appeal to those individuals who were on the periphery of the group involved in Andrew’s murder," Detective Inspector Pat O’Donnell said in a statement issued on Monday, 14 February.
"In particular their friends, family members and partners.
"It has been 14 years since Andrew’s murder and during that time relationships change, loyalties change and people may not now be constrained by the set of circumstances that existed for them some 14 years ago.
"An Garda Síochána is appealing to those individuals to look into their conscience and unburden themselves of whatever information they may have," O'Donnell added.
An Garda Síochána emphasised its gratefulness for all the witnesses that have come forward and provided statements in the intervening years.
Any new information received by An Garda Síochána in relation to the murder will be treated in the strictest confidence.
Anyone with relevant information is asked to make contact with the incident room at Letterkenny Garda Station on 074 9167100, the Garda Confidential Line 1800 666 111 or make contact with any Garda Station.
