A mortar similar to the one used in the attack was found by Gardaí near Newtowncunningham on 13 February, and British army bomb disposal experts made safe another mortar found between Dungannon and Carrickmore on 12 April.
En granat liknande den som användes i attacken hittades av Gardaí nära Newtowncunningham den 13 februari och brittiska arméns bombexperter desarmerade ytterligare en mellan Dungannon och Carrickmore den 12 april.