Gardai investigating the murder of Ashling Murphy are still waiting to speak to their main suspect, who's currently in hospital.
The 23 year old primary school teacher was killed while jogging along the Grand Canal in Tullamore, Co. Offaly last Wednesday.
Garda divers are still searching the canal to find any weapon that might have been used in the attack.
Conor Lally, crime and security editor with the Irish Times, says the man in hospital is the key focus of the investigation: