Saboteurs again blew up Yemen's main Marib-Ras Isa oil pipeline Tuesday night, the country's defense ministry said Wednesday, without advising whether the flow of crude has been affected.

"Subversive elements blew up the pipeline at kilometer 93 in the Sirwah area in the Marib province," the ministry said in a statement posted on its website.

The attack caused a large fire and a leak, it said.

The pipeline carries about 120,000 barrels of oil a day from the Marib fields to Ras Isa export terminal on the Red Sea. It has been the target of several attacks in the last two years, leading to the cessation of oil extraction for almost a year in 2011 and resulting in losses of up to $15 million a day in export earnings for the impoverished country.

Yemen, which once produced about 270,000 barrels of oil a day, has seen its oil and gas pipelines repeatedly sabotaged since anti-government protests broke out in January 2011.