Production is set to resume, Wednesday, at a gas pipeline in Yemen that was attacked by suspected militants.

Earlier this month, officials suspended operations at the Balhaf terminal on the Gulf of Aden after an explosion damaged the facility.

Meanwhile, news organizations say intense gunfire could be heard in cities of Sana'a and Taiz late Tuesday,after a cease-fire was announced.

The Yemeni government and forces loyal to a dissident general confirmed the truce on Tuesday. Several previous agreements have failed to hold.

Earlier Tuesday, at least 10 people were killed in fighting between government forces and opponents in Sana'a and Taiz.

Medical workers reported two killed and at least 40 wounded in Sana'a when security forces fired on protesters who were calling for President Ali Abdullah Saleh to step down. Government troops also clashed with dissident soldiers.

At least eight civilians were killed in the southern city of Taiz in crossfire between protest-supporting tribesmen and government troops.

The U.S. State Department says the Yemeni president told the U.S. ambassador in Sana'a Tuesday that he is committed to a Gulf Cooperation Council plan that would have him step down amid political violence.

This echoed Mr. Saleh's statement Monday, welcoming a U.N. Security Council resolution urging him to sign the deal to leave office. The president said he is ready for talks to put a deal in motion.

A Gulf Cooperation Council proposal offers Mr. Saleh immunity from prosecution if he hands power to a deputy within 30 days. On at least three occasions, Mr. Saleh has refused to sign the plan, saying he first wants international guarantees about a timetable for its implementation.

Also Tuesday, Yemeni security officials say a military plane crashed while landing at an air base in the country's south, killing at least four of the 15 people on board.

Officials said the crash in Lahej province likely was caused by a technical problem.

Reports say the plane carried eight Syrians and seven Yemenis.