A report quoted officials who said that Wednesday's blast at a pipeline in Sinai was engineered in part by a PA terror group. Salah al-Masri, in charge of security for the Egyptian army in northern Sinai, told a Saudi newspaper that in his estimation it was impossible to say that local Bedouin could carry out such a powerful attack. He added that some PA terrorists had been arrested over the past week, and that they had been found to have been in possession of caches of weapons.