Mekel says the government's problems with the network grew during the recent Israeli military attacks inside Hamas-controlled Gaza following Palestinian rocket attacksonthe southern Israeli town of Sderot and the port city of Ashkelon.
At that time there were a spate of similar sectarian pipe bomb attackson houses in thetown, and the RUC increased their surveillance and 'stop-and-search' operations in thetown to try to deal with the rise in sectarian incidents.
Pre-dawn air raids resumed Wednesday with Serbian TV reporting attacksonthe Bistrica hydroelectric plant near the southern Serb town of Nova Varos, about 125 miles (200 km) south of Belgrade.
Police had been on alert for possible attacks by ETA in tourist destinations after a suspected member of the group was killed in the coastal town of Torrevieja, near Alicante, when explosives she was handling blew up on Tuesday.