Tribesmen in Yemen's eastern Marib province protested against the government Tuesday after an overnight attack on an oil pipeline in the area believed to have been carried out by a local tribe.
The pipeline blast in Marib is linked to the same tribe of former provincial councilman Jabir Al-Shabwani who was killed last summer in an air strike against al-Qaeda elements in the province.
Tribes in the area have demanded to know who was responsible for his killing, but the government has so far not disclosed any names. Some locals believe the attack was carried out by an unmanned US drone, dpa reported
There were also protests reported in other provinces throughout Yemen, but the capital Sana'a remained largely calm.
Protests have turned violent in Yemen, with seven people killed and over 100 injured in the capital in less than a week.
Police have used live fire on protesters demanding the ouster of President Ali Abdullah Saleh, who has been in power for 32 years.
According to the Yemen Post, at least one soldier was killed and three others wounded in an ambush, believed to be by suspected al- Qaeda militants in Yemen's southern province of Abyan on Sunday.
Local media also reported that anti-government protesters set fire on Sunday to a police station in Yemen's business capital Aden in what appeared to be retaliation for the government's use of force on protesters.
The US Department of State issued a statement on Sunday calling on all parties in Yemen to enter into dialogue and warned against using force on peaceful demonstrators. The United Nations has also issued a similar statement.