Anyone with information on a 'Falcon Storm' mountain bike is asked to come forward.
It appears a green mountain bike, believed to be linked with the death of Ashling Murphy, is now central to Garda enquiries.
A man who was arrested yesterday in relation to the 23-year-old's death has been released and is no longer a suspect.
Officers have renewed their appeal for witnesses and for anyone with information on a 'Falcon Storm' mountain bike with straight handlebars to come forward.
Reporter with Independent News and Media Conor Feehan says the person who killed Ashling is still at large:
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