Gardai have renewed their appeal for information into the murder of Ashling Murphy as "significant progress" continues to be made in the investigation.
The 23-year-old teacher was killed while out jogging at around 4pm along the canal bank in Tullamore, Co Offaly on Wednesday.
Gardai are currently examining the scene around a bottle bank in the town as part of the probe as they wait to question a suspect who is being treated at a Dublin hospital.