This couldn’t have been doen by the Brotherhood; MSNBC has told us they are a reformed peaceful political group.
They are probably right the Bedouin tribesmen have tried it before.
"Al Jazeera's corrspondent reported from Egypt that, "We do not know yet who was behind the explosion as no group has claimed responsibility."
According to Al Jazeera's sources, eye witnesses are being interviewed by authorities and the investigation is focusing on some bedouin tribes of Northern Sinai.
Bedouins of the Sinai Peninsula attempted to blow up the pipeline last July as tensions intensified between them and the Egyptian government, which they accuse of discrimination and of ignoring their plight.
"They do not enjoy the wealth that the state generates from the Sinai peninsula, the money has not benefitted the communities there," our correspondent added."