BEIRUT — Prime Minister Najib Mikati said Wednesday he had transferred  Lebanon’s share of funding to a UN-backed court probing the murder of  ex-premier Rafiq Hariri, an issue that has threatened to spark the  collapse of his government.

“This morning, I transferred Lebanon’s share of funding to the Special  Tribunal for Lebanon (TSL),” Mikati said in a surprise announcement.

He said the decision would preserve national unity and was in the  country’s best interest. “This does not constitute a victory for one party over another,” the  premier told reporters. “This represents a gain for the Lebanese state  and institutions.”

Mikati last week threatened to resign should his Hizbullah-dominated government refuse to fund the STL, and the issue was to be discussed  on Wednesday at a cabinet meeting that was postponed.

“I don’t want to be head of a government that fails to honor its  international obligations and pulls the country out of the Arab and  international community,” the premier said.

It was unclear whether his decision to transfer the funds had the blessing of his cabinet.

The Netherlands-based STL has indicted four Hizbullah operatives for murdering Hariri and 22 others in a car bomb blast in Beirut on  February 14, 2005.

Hizbullah chief Hassan Nasrallah, who has denounced the court as part  of a U.S.-Israeli conspiracy, has steadfastly pushed with his allies for  Lebanon to cut all ties with the tribunal.

Hizbullah has also vowed that those accused will never be found or handed over.

Mikati said on Wednesday that he was keen for the STL to push forwards with its work but urged the court to remain fair and impartial. He said the STL’s work must not be politically motivated.

The Shi’a Hizbullah, the most powerful military and political force in Lebanon, toppled the government of Saad Hariri, the slain leader’s  son, in January after he refused to stop cooperation with the court.

Lebanon is responsible for meeting 49 percent of the STL’s financing, which amounts to some $35 million (25.2 million euros) this year. Mikati’s government had until the end of October to transfer the now overdue funds.

The premier said last week that he would rather quit than be head of a government that did not honor its international obligations.

In recent weeks, Mikati had come under intense international pressure for Lebanon to uphold its duties towards the court and STL president David Baragwanath visited the country to drive the message home.

Rafiq Hariri’s death in 2005 led to a series of political crises that brought the country close to civil war in 2008.

The STL was created by a 2007 UN Security Council resolution at Lebanon’s request. It opened its doors in 2009, tasked with trying those suspected of responsibility for Hariri’s assassination.

It is the first international criminal tribunal with jurisdiction over terrorism offenses and a mandate to try defendants in absentia if necessary.