Police investigating seperate bomb exposions in Co Armagh and Co Fermanagh have arrested two men.
A 39-year-old and 35-year-old are being held under the Terrorism Act following searches in the Lurgan and Craigavon areas on Sunday.
They have been taken to Musgrave Serious Crime Suite for questioning.
The first of the two incidents carried by the Continuity IRA happened in the Tullygally Road area of Craigavon on Friday July 26.
Police were lured to the scene after a caller to the Irish News claimed a mortar had been fired in the area.
However, on further examination the mortar was found to be a hoax, intending to lure officers to the scene, with a secondary live bomb planted nearby.
Police said an eyewitness had seen a man running away form the scene of the attack.
The second attack took place last week at Wattle Bridge, close to the Fermanagh border.
Police and army bomb disposal officers were lured to the scene with a hoax bomb alert, while searching the area a secondary device exploded.
No one was injured in the attack.
The PSNI said it believed the Continuity IRA was behind the "deliberate attempt" to kill police officers.
The attack at Wattle Bridge was the fifth attempt to murder police officers so far this year.
