Detective Chief Inspector John Caldwell is in a critical condition
Two further arrests have been made by detectives investigating the attempted murder of Detective Chief Inspector John Caldwell in Omagh, Co Tyrone.
Tonight marks a week since the suspected New IRA gun attack.
The PSNI officer remains critically ill, but stable, in hospital.
A 33-year-old man was arrested in Omagh, while a 57-year-old man was arrested in Belfast earlier today.
Both were arrested under the Terrorism Act.
Two men, aged 47 and 71, also arrested in connection with the attempted murder, remain in police custody at this time.

Over €2,000 Damage Caused in Vandalism at Athy Sports Ground
Weather Warning Issues Storm Dave Approaches Ireland
Fresh Blow For Metrolink As Programme Director Quits
Investigation Into Death Of Inmate In Portlaoise Prison
Intel Reclaims Control of Key Irish Chip Facility In Leixlip
€7m Worth Of Cannabis Seized In Athy
Budget 2027 To Take Place On October 6th
Kildare Gardaí See Increase In Drivers Taking Off Without Paying For Fuel, Whilst State Of The Nation Address Not Ruled Out By Taoiseach