Gardai have appealed to anybody who may have witnessed an incident in a Ballybofey bar the night before a young man died to contact them.
Dean Lafferty, 18, died at his home at Admiran Park on February 17th last.
The talented artist is believed to have been drinking in the bar on Navenney Street on Sunday, February 16th.
It is understood that Gardai are working on the theory that the well-known young man received a blow to the head before he died.
He was found dead at his house by family members around 8pm.
The emergency services tried to save Dean but he was pronounced dead at the scene.
Now Gardai say they are anxious to speak to anyone who was in the Barca Bar or close to it on the night of February 16th between 10pm and 1am the following morning.
A number of people who were in the bar are already understood to have passed on information.
However Gardai want to speak to anyone who was in the area and who may have noticed anything strange to contact them.
People with any information can contact Gardai at Ballybofey on 074 9137740 between 10am and 6pm, daily.
They can also call Letterkenny Garda Station on 074 9167100, the Incident Room in Letterkenny is 074 9167170 or the Garda Confidential Line 1800 666 111.