BEIRUT: Hezbollah leader Hassan Nasrallah on Wednesday said the Special Tribunal for Lebanon lacked sufficient evidence to implicate members of the Iranian-backed militant group in the 2005 murder of ex-premier Rafik Hariri.

"What the tribunal published confirms what we have been saying for months, that the investigation is neither transparent nor scientific," said Nasrallah in a televised speech broadcast on Al Manar hours after the Netherlands-based court unsealed its indictment.

"There is no direct evidence in the entire text... the investigation was built on coincidental telephone communications," he added.

"It is unacceptable that four of our honourable brothers in the resistance be accused, rather, be victims of slander and injustice."

Nasrallah also accused the court of aiming to "destroy the human and social fabric of Lebanon".

The Special Tribunal for Lebanon on Wednesday unsealed large parts of an indictment accusing four Lebanese citizens with close ties to Hezbollah in the February 14, 2005 bombing that killed Hariri and 21 others in Beirut.

The indictment draws extensively on telecoms evidence against Mustafa Amine Badreddine, Salim Jamil Ayyash, Hussain Hassan Oneissi, and Assad Hassan Sabra, all of whom remain at large.

They face charges that include conspiracy aimed at committing a terrorist act and intentional homicide.

Lebanese officials have said the four are members of Hezbollah, but the indictment stopped short of openly drawing the connection.

"Based on their experience, training, and affiliation with Hezbollah, therefore, it is reasonable to conclude that Badreddine and Ayyash had the capability to undertake the February 14, 2005 attack," the text said.

Nasrallah has repeatedly accused the tribunal of being a US-Israeli conspiracy against his group.