He's being detained at a garda station in the east of the country.
Another man has been arrested in relation to the murder of Ashing Murphy.
Aged in his 30s, he's being detained at a garda station in the east of the country.
He's being questioned in relation to potential withholding of information contrary to The Offences Against the State (Amendment) Act 1998, and is being held under the provisions of Section 30 Offences Against the State Act 1939 as amended.
Another man in his 30s remains in custody in Tullamore Garda Station today.
He was arrested in Dublin yesterday.
Gardaí can continue to question the individual under the provisions of Section 4 of the Criminal Justice Act 1984 until later this evening, after which they will have to either charge or release him.
Today marks a week since the 23 year old was killed while out for a run along the Grand Canal in Tullamore.
A public appeal for information remains, including about a man in a black tracksuit and runners who's believed to have been in the Grand Canal area in Tullamore around the time of Ashling's death at 4pm last Wednesday, 12th January.
Gardaí remain at the scene today, but are offering no further information at this time.
Braveheart Fans Preparing For Auction From Midlands Home
New Grand Canal Centre Set For Offaly This Summer
Midlands Historic Buildings To Receive Almost €780k In Funding
New Training Facility Opening For Midlands Farmers
Electronic Waste Collection Days Set For Offaly
Laois Carpark Closing At End Of January
New Bishop Appointed For Laois Parishes
Over 12K Jobs Created By Enterprise Ireland Backed Companies
Students Reminded Of February 1st CAO Deadline For Restricted Courses
Trinity College Awards Entrance Scholarships To 27 Midlands Students
Laois IFA Chair Warns Farmers After Wexford Bluetongue Case
Midlands Stars Shine After Country Week On Dancing With The Stars
Increased Garda Presence Planned To Tackle Abuse Of Retail Workers
Midlands Golden Goose Concepta Defies The Odds Again
IFA Protest Outside Bord Bia Calling For Chair Resignation
Laois School Principal Says Anxiety Factor In High Absenteeism Rates
Ryanair Flight Fares To Rise Slightly Despite Fuel Savings
Offaly IFA AGM To Take Place This Evening
Median House Prices Surging In Midlands
Laois TD Calls For Hospital Ward To Remain Open Amid New €31M Facility