Hizbullah Secretary-General Sayyed Hassan Nasrallah on Thursday called on "every official and every citizen to boycott the work of U.N. investigators" probing the murder of former premier Rafik Hariri.

"I call on all officials to do what their conscience and honor tell them … Enough violations."

Around one hour after Hizbullah chief Sayyed Hassan Nasrallah called on the Lebanese to boycott the Special Tribunal for Lebanon, Lebanese Forces leader Samir Geagea criticized Nasrallah's televised speech, describing it as "very dangerous."

Geagea described Nasrallah's stances as threats against the Lebanese State, noting that the State is "the side mainly dealing with U.N. investigators."

Terje Roed-Larsen, U.N. Special Envoy for the implementation of Security Council Resolution 1559, said Thursday that Lebanon is in a "hyper-dangerous" state because of the "heavily armed militias" operating in it.

The envoy, Terje Roed Larsen, called for urgent efforts to disarm groups such as Hizbullah in Lebanon, warning that there is "a hurricane blowing up" in the Middle East.

The Office of the Prosecutor of the Special Tribunal for Lebanon on Wednesday denounced "the use of violence," after a group of women charged at U.N. investigators at a Dahiyeh gynecology clinic and snatched a briefcase containing documents from them.

"The investigation into the Hariri attack will continue and this incident will not deter the OTP from pursuing its mission," STL's press office stressed in a communiqué.

The attack this morning in Beirut against staff members of the Special Tribunal for Lebanon is a deplorable attempt to obstruct justice, STL's press office said in a communiqué on Wednesday.

"Those who carried out this attack must know that violence will not deter the Special Tribunal for Lebanon, a court of law, from fulfilling its mandate," added the communiqué.

Men disguised as Muslim women clad in burqa (black veil and top to toe gown) were reportedly part of the group of women that attacked U.N. investigators at a Beirut clinic who were on a mission to obtain phone numbers of between 14 to 17 people.

On Wednesday, a group of women stormed into a gynecologist's clinic in Beirut's southern suburbs and clashed with investigators from the Special Tribunal for Lebanon.

The so-called key witness in the 2005 assassination of former Prime Minister Rafik Hariri Zuheir Siddiq was not shot and wounded in Germany, his brother Imad said.

The website "Beirut Observer" on Tuesday quoted sources as saying Siddiq survived an assassination attempt a "few days ago."

Hizbullah leader Sayyed Hassan Nasrallah will appear on television on Thursday evening to talk about the performance and behavior of investigators from a U.N. probe into the assassination of former Prime Minister Rafik Hariri.

A Hizbullah statement said Nasrallah will appear on Al-Manar TV at 8:30 pm on Thursday.

A prominent Arab-Israeli human rights activist was convicted on Wednesday of spying for Lebanon's Hizbullah, a statement from the Israeli justice ministry said.

In a plea bargain submitted to the Haifa district court, Amir Makhoul "confessed to and was convicted of ... espionage and aggravated espionage," the statement said.

A group of women charged at investigators from a U.N. probe into the murder of ex-premier Rafik Hariri at a Beirut Southern Suburbs gynecology clinic Wednesday, snatching a briefcase but causing no injuries, a doctor said.

Doctor Iman Sharara, who runs the private obstetrics and gynecology clinic, told reporters a team of two male investigators, their female translator and a plain clothes security officer arrived at her practice mid-morning on a scheduled appointment.