Things are about to get ugly in Lebanon.

(JPost)– A UN tribunal investigating the assassination of former Lebanese prime minister Rafik Hariri is expected to accuse Iranian Supreme Leader Ayatollah Khamenei of ordering the killing, while Lebanon’s caretaker prime minister said that dialogue is the only way out of the country’s political crisis after a Hizbullah-led coalition toppled his Western-backed government.

According to the US-based Newsmax website, the investigative body will lay out evidence showing that the 2005 murder was committed by Iran’s Quds force, along with Hizbullah.

The order to murder Hariri was transmitted to Hizbullah’s military leader, Imad Mughniyeh, by Quds force chief Qassem Suleymani, sources told Newsmax.

Mughniyeh was killed in a car bombing in Damascus on February 12, 2008. According to Saturday’s report, Mughniyeh put together the hit team that carried out the attack at the behest of Iran, with the help of his brotherin- law.

“The Iranians considered Hariri to be an agent of Saudi Arabia, and felt that killing him would pave the way for a Hizbullah takeover of Lebanon,” a source told Newsmax.

Iran was not the only country involved in the assassination plot, they said. Syrian President Bashar al-Assad, and his brother-in-law, Assef Shawkat, the head of Syrian intelligence, also played key roles in the plan to murder Hariri, a source was reported as saying.

The UN team intended to submit a draft indictment later Saturday, according to a report by the Lebanese daily A-Nahar. According to the report, the tribunal is set to hand in a preliminary copy to pre-trial Judge Daniel Fransen.