The Lebanese army said Sunday it had not uncovered any plot for assassination in the country, one day after Prime Minister Saad Hariri announced a surprise resignation.
Hezbollah chief Hassan Nasrallah is set to address Hariri's resignation in a speech on Sunday, the Hezbollah-affiliated Al-Manar TV reported.
As he resigned on television Saturday, Hariri lashed out at Iran for meddling in the affairs of "the Arab world", saying that Lebanon would "rise as it had done in the past" and "cut off the hands that wickedly extend into it".
Lebanese Prime Minister Saad Hariri was reportedly informed of a plot to assassinate him by Western intelligence agencies, leading him to flee the country and resign from his post.
But it's been an uneasy partnership between Hariri, who heads a Sunni-led camp loyal to Saudi Arabia, and Hezbollah, which represents a camp loyal to Shiite Iran. He could not have formed a government without the group, which operates its own militia freely in Lebanon.
"Do not listen to alarmist speeches", Nasrallah said.
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He said "legitimate questions" were being asked in Lebanon over whether Hariri had been detained in Saudi Arabia, adding that Lebanon's political leaders expected him to return to the country on Thursday "if he is allowed" to travel.
President Michel Aoun, a political ally of Hezbollah, will wait to accept or reject Hariri's resignation until he returns to Lebanon to explain his reasons, sources at the presidential palace said.
Having Lebanon plunged in chaos and instability can only exacerbate an already messy regional scene.
In Lebanon's sectarian system the president must be a Maronite Catholic, the prime minister a Sunni and the speaker of parliament a Shia. "This confrontation (between Saudi Arabia and Iran) is more violent than Lebanon can stand up to", he said, warning of economic and security ramifications. "We are living in a climate similar to the atmosphere that prevailed before the assassination of martyr Rafik al-Hariri", his father, who was killed in a vehicle bomb incident in 2005 that many believe Hezbollah was involved in".
A UN-backed tribunal has indicted five Hezbollah members for the killing but the group denies any involvement.
Hariri's death was followed by a series of assassinations against Hezbollah opponents.
A Saudi minister said on Saturday that Hariri's personal security detail had "confirmed information" about the plot.