The explosion occurred in the Arqain valley area, some 30 km from Safir. An investigation into the attack was going on to find out whether tribesmen or Islamist militants were involved in the bombing, the sources said.
Disgruntled tribesmen in Marib have frequently targeted the pipeline in the past few years in attempts to force the government to release jailed fellow clansmen or improve services to their impoverished areas.
On Jan 23, the leader of Al Qaeda in Yemen, Nasser al-Wahishi, threatened to carry out attacks against US and Western interests in the Arabian Peninsula.
'We will cut supply lines of the US forces in the Arabian Peninsula and attack Westerners and Western interests until America stops its support to the Jews,' al-Wahishi said in a rare video posted on Islamist web sites.
Yemen is a small non-OPEC oil producer that pumps around 330,000 barrels per day.
Author: Ksenia Kochneva




