Bulgarian investigators worked with the FBI and Interpol Thursday to identify the suicide attacker behind a deadly bombing on a bus carrying Israeli tourists, as Israeli Premier Benjamin Netanyahu said the attack "was perpetrated by Hizbullah" and Iran denied involvement.

The attack "was perpetrated by Hizbullah, Iran's leading terrorist proxy," said Netanyahu, describing the Lebanese group as "the long arm of Iran."

Justice Minister Shakib Qortbawi denied on Thursday that he and Prime Minister Najib Miqati were behind the decision to re-detain the three officers and 5 soldiers, who were held in connection with the killing of Sunni Sheikh Ahmed Abdul Wahed and his companion Mohammed Merheb.

“We didn’t formulate a plan that allows the re-arrest of officers nor we proposed that before the cabinet during its previous session on Monday,” Qortbawi told al-Joumhouria newspaper.

The cabinet that convened at the Baabda Palace on Wednesday witnessed a heated debate between Free Patriotic Movement and AMAL ministers over the full-time employment of Electricite du Liban’s contract workers.

According to local newspapers published on Thursday, FPM Energy Minister Jebran Bassil engaged in a sharp spat with AMAL Health Minister Ali Hassan Khalil after Bassil urged Interior Minister Marwan Charbel to evacuate the employees from EDL’s headquarters by force.

Prime Minister Najib Miqati hinted that he would resign if the situation in the country and the cabinet’s lack of productivity in all fields continues, As Safir newspaper reported on Thursday.

Miqati criticized the situation in Lebanon during the cabinet session that was held at the Baabda Palace on Wednesday, noting that the cabinet’s immobilization is not acceptable anymore.

Israel expressed concern on Thursday that Hizbullah might attempt to transfer advanced weapons systems or chemical weapons from Syrian to Lebanon if the regime of President Bashar Assad collapsed.

"We are vigilantly watching the developments and the possibility that Hizbullah might attempt to transfer advanced weapons systems or chemical weapons from Syria to Lebanon,” Israeli Defense Minister Ehud Barak said in a statement issued by his office.

Hizbullah Secretary-General Sayyed Hassan Nasrallah on Wednesday stressed that Syria is a “real military supporter of the Resistance,” extending condolences over the death of three top Syrian officials in a blast that rocked the headquarters of National Security in Damascus.

The bombing killed Defense Minister General Daoud Rajha, Assad's brother-in-law Assef Shawkat and General Hassan Turkmani, head of the regime's crisis cell on the uprising, state media said.

The Appeals Chamber of the U.N.-backed Special Tribunal for Lebanon issued Wednesday a decision rejecting the request of the Defense to reconsider its ruling of February 16, 2011, “which defined terrorism for the first time in international law,” the STL said in a statement.

The Defense argued that the content of the decision should be revisited. They also challenged the procedure followed to issue that decision.

One person was killed in Tripoli on Wednesday by gunshots fired in celebration of the Syria bombing.

Khaled Fares was killed at the Malloula roundabout by a stray bullet shot during the Tripoli celebrations over the news of the Damascus explosion that targeted a number of Syrian security officials, reported MTV.

The Saint George Hospital University Medical Center in Beriut’s Ashrafiyeh neighborhood is expected to inaugurate on Thursday a helipad on the roof of the building during a ceremony sponsored by Greek Orthodox Archbishop of Beirut Elias Audeh.

The inauguration will take place at 11:00 a.m. and will include medical maneuvers by the Lebanese airforce and members of the United Nations Interim Force in Lebanon, in cooperation with medical and technical teams from the hospital.

Head of the private school teachers association Nehme Mahfoud revealed on Wednesday that the Syndicate Coordination Committee reached an agreement with Prime Minister Najib Miqati over the new salaries scale for public workers.

“The deal included the teachers and the employees of the public sector altogether,” Mahfoud told reporters after heading a delegation to the Grand Serail.