A Dyfed-Powys police spokesman said: "Those arrested all have close associations with the Brecon area." He declined to say how many were being questioned at police stations in the force area.
Forensic experts were continuing to sift through the wreckage of the house in Dorglas, an estate about 400 yards from Brecon Barracks, the headquarters of the Army in Wales. On Wednesday police discovered a number of 8oz sticks of plastic explosive in another house about a mile from the scene of the explosion. The material, PE4, is manufactured by Royal Ordnance for use by the armed services. Detective Chief Superintendent Jeff Thomas, head of Dyfed-Powys CID, said the explosion which wrecked the house in Dorglas had been caused by about 1lb of explosives.Reuse content