A man in his 40s remains detained at Tullamore Garda station.
Gardaí are appealing for information surrounding a mountain bike connected with the murder of Ashling Murphy.
The fatal assault occurred at approximately 4pm on Wednesday (12 January) along the canal bank at Cappincur, Tullamore, County Offaly.
A postmortem as been completed, with results not being released for operational reasons.
A man in his 40s remains detained at Tullamore Garda Station under the provisions of Section 4 of the Criminal Justice Act, 1984.
The bike in question that Gardaí are appealing for information around is a Falcon Storm mountain bike with straight handlebars and distinctive yellow/green front forks.
Gardaí also continue to appeal to any persons that were in the Cappincur/Canal walk area of Tullamore, County Offaly before 4pm on Wednesday to make contact with them.
Anyone with information is asked to contact Tullamore Garda Station on 057 932 7600, the Garda Confidential Line on 1800 666 111, or any Garda Station.
