AMRAN, 01 June -- Six Shiite rebels and four tribesmen were killed on Tuesday in fierce clashes in the northern region of Harf Sufian, 70 kilometers north of the capital, the Sahwa Mobile service said. The fighting broke out after a group of Houthi rebels attacked and seized the village of Dhu-Daqish taking six tribesmen hostage. Among the dead is rebel leader Abu-Hidar as hundreds of armed rebels buried their dead. On Monday, clashes erupted between Houthi elements and pro-government tribesmen from Bani Awiar in the northern area of Sahar in Sadaa amid reports four rebels and two tribesmen were killed in the fighting which was triggered by Houthis trying to take over a school in the area. Al-Masder Online cited Houthi leaders as vowing to take revenge saying “the perpetrators will pay a heavy price.” A statement by Abdul-Malik al-Houthi said “the state is fully responsible,” adding “the militias of the little parliamentarian, Hamoud Aziz are breaching the agreement, and setting up ambushes and that doesn’t serve peace.” Houthi spokesman Muhammad Abdul-Salam accused the government of fomenting tensions just as life was gradually returning to some sort of normality in the war-ravaged north, a charge the government denied and lobbed back at the rebels. Meanwhile, the national committee of dialogue called on a statement on Monday for resolving the underlying causes of the conflict.Meanwhile, serious fissures started to appear in the once rock-solid Shiite coalition in north Yemen as rifts and tension among its leaders escalated last week over theological interpretation and the killing of rivals, Marib Press said. In a news statement published on Saturday, a number of Zaydi scholars claiming to be followers of cleric Majd al-Din Muhammad Bin Mansour al-Moayd accused followers of rebel leader, Abdul-Malik al-Houthi of attacking their mosques, schools and homes. “We committed to silence in order to avoid spawning mayhem and problems but the followers of Abdul-Malik al-Houthi continued shedding blood and killed religion student Muhammad Bin Muhammad al-Naimi, and wounded his brother Ali in an outrageous aggression,” said the statement, adding “any attack against any follower of Majd al-Din al-Moayd is considered an attack on all.”