BEIRUT - Journalists covering an international investigation into the assassination of Lebanon’s ex-prime minister, Rafik Hariri, will find themselves testifying this week, prompting a debate over the Special Tribunal for Lebanon’s reach and the limits of free speech.

For the past six years, the court has sought to find and prosecute the culprits behind the Hariri assassination. Hariri was one of a number of high-profile critics of the Syrian regime to be assassinated at the time. He and 21 others were killed by a huge car bomb in 2005 on a Beirut street.

International Tribunal for Lebanon to Try Journalists for Leaks

On Thursday, the tribunal begins a trial for journalists and news outlets it claims have undermined its investigation by revealing details about witnesses in the case.

International Tribunal for Lebanon to Try Journalists for Leaks

Among the accused set to stand trial is well-known journalist Karma al-Khayat and her employer Al Jadeed TV. Al-Khayat is accused of contempt of court alongside Hezbollah-leaning newspaper and the paper’s co-founder, Ibrahim Al-Amin.

International Tribunal for Lebanon to Try Journalists for Leaks

Al-Khayat, like Al-Amin, has pleaded not guilty and denies the broadcasts undermined the efforts of the Special Tribunal for Lebanon.

“We believe this is a trial about freedom of speech,” she told VOA. "By putting us on trial, they are trying to shut us up and teach a lesson to all other media in Lebanon.”

Based in The Hague and established by the United Nations Security Council at the request of the Lebanese government, the tribunal is trying in absentia five members of Hezbollah for complicity in the assassination. Hezbollah has refused to acknowledge the tribunal or hand over its members to the court, which it claims is politically driven.

The trial is expected to cost nearly $63 million this year, with just under half the money coming from the Lebanese government and the rest coming from the international community, including the United States.

While the length of time, and cost, of the process has drawn critics from some quarters of the press, its very existence has also been divisive, argued American University of Beirut professor of political studies Hilal Khashan.

“Lebanese society is divided, and so is the media,” said Khashan. "Part of the media is for bringing the culprits who assassinated Rafik Hariri to court and the STL, and on the other hand part of the media rejected the creation of the STL and accused it of being an agent of the U.S. and Israel.”

Since the start of the investigation in 2009, the Special Tribunal for Lebanon has been hit by a number of apparent leaks, including revelations in German weekly Der Spiegel and Canadian broadcaster CBC.

It was the actions of Al Jadeed TV and that prompted a response from the tribunal.

In August 2012 Al Jadeed TV broadcast a series of programs, named “The Witnesses of the International Tribunal,” with details of alleged witnesses.

But unlike , which in 2013 published photos, names and other details of supposed witnesses, al-Khayat told VOA that names were not included in the broadcast and faces were pixilated. Khayat said the point of the piece was not to expose the witnesses included in a list handed to Al Jadeed or to derail the tribunal.

“I assure you our report did not cause harm,” she said, adding there was a strong case for investigating the lists and their possible leak. “Any investigative story should be chosen based on its public interest value, and the STL is very important to the Lebanese people. There is a high public value in knowing what is going on.”

It is a point disputed by the Special Tribunal for Lebanon, which said the “entire tenor of the program was the exposure of alleged confidential witnesses.” In a statement to VOA, the tribunal said it “welcomes any criticism” that “doesn’t interfere” with its efforts to discover those behind the bomb that killed Hariri, but “freedom of expression is not absolute.”

It asserts “media organizations must comply with the law,” stating the case is about “the deliberate interference with the administration of justice.” Alongside the charge of undermining the investigation by revealing witness details, al-Khayat and Al Jadeed TV are also accused of not removing the reports when ordered to by the tribunal.

If convicted, the accused could be jailed for seven years and fined up to about $130,000.

With the trial already splitting public opinion in the country, the pursuit of those behind the reports has drawn condemnation from some.

The decision to prosecute saw protests in Beirut from journalists and colleagues of the accused, while the country’s National Audio-Visual Media Council was reported at the time as condemning what it dubbed a “blatant violation” of Lebanon’s sovereignty that “harms the freedom of the media.”