ISLAMABAD: Pakistan will go ahead with a plan to import natural gas from Iran even if the US levies additional sanctions on the country, Prime Minister Yousuf Raza Gilani said.

Gilani’s comments Tuesday come two days after the US special envoy to Pakistan, Richard Holbrooke, cautioned Pakistan not to ”over commit” itself to the deal because it could run afoul of new sanctions against Iran.

Gilani said Pakistan would reconsider the deal if it violated UN sanctions, but the country was ”not bound to follow” unilateral US measures. He said media reports that quoted him as saying that Pakistan would heed Holbrooke’s warning were incorrect.

The deal has been a constant source of tension between the two countries, with Pakistan arguing that it is vital to its ability to cope with an energy crisis and the US stressing that it would undercut international pressure on Iran over its nuclear program.

The UN has levied four sets of sanctions against Iran for failing to suspend uranium enrichment, a process that can produce fuel for a nuclear weapon. The latest set of UN sanctions was approved earlier this month.

The US has also applied a number of unilateral sanctions against Iran, and Congress is currently finalising a new set largely aimed at the country’s petroleum industry. Both houses have passed versions of the sanctions and are working to reconcile their differences.

Pakistan and Iran finalised the gas deal earlier this month. Under the contract, Iran will export 760 million cubic feet of gas per day to Pakistan through a new pipeline beginning in 2014. The construction of the pipeline is estimated to cost some $7 billion.