EU foreign policy chief Catherine Ashton urged Syria on Thursday to implement "fully and rapidly" an Arab League plan to end months of bloodshed.

"I welcome the efforts of the Arab League to end violence and bring about the reforms that the Syrian people have bravely demanded these last seven months," she said in a statement.

Prime Minister Najib Miqati stated on Thursday that Hizbullah chief Sayyed Hassan Nasrallah had committed “in principle” to the funding of the Special Tribunal for Lebanon.

He told BBC television in an interview set to be broadcast later on Thursday: “Nasrallah never said ‘no’ to the tribunal. Of course the party has its reservations on the STL, but he left it up to the constitutional institutions to assume their duties in this matter.”

Lebanese Forces leader Samir Geagea noted on Thursday that the Syrian regime cannot go ahead with the Arab League proposal even though it had announced its acceptance of the initiative “without reservations.”

He added: “The regime has only made a political maneuver and it cannot withdraw its troops from the streets and it will not allow the media and rights groups to enter Syria.”

Arab League chief Nabil al-Arabi met Syrian opposition figures Thursday, a day after Damascus agreed to open talks with dissidents, a member of the Syrian National Council said.

Arabi "briefed us on the details of the Arab League initiative and its goals ... aimed at finding an Arab solution to the Syrian crisis based on the need to stop the bloodshed in Syria," said Samir al-Nashar, a member of the executive bureau of the SNC.

Syrian troops killed 20 civilians and arrested dozens on Thursday, a rights watchdog said, a day after Damascus pledged to withdraw its forces from protest hubs under an Arab League plan to end the bloodshed.

"Twenty civilians were killed today in several neighborhoods of Homs where the sound of gunfire can still be heard," said the Syrian Observatory for Human Rights in a statement received by Agence France Presse.

The ringleader of the network that abducted the seven Estonian tourists in March, Wael Abbas, was on Thursday being questioned by the Internal Security Forces Intelligence Branch, judicial sources told pan-Arab daily al-Hayat.

The sources said Abbas was first questioned by the General Security Department and was then transferred to the Intelligence Branch.

German Chancellor Angela Merkel said Wednesday that Berlin wanted the United Nations to take a firmer line on Syria's attacks on civilians after nearly eight months of deadly violence.

Merkel told reporters after talks with Turkish Prime Minister Recep Tayyip Erdogan that they agreed in "condemning the human rights violations occurring in Syria".

Syria accepted Wednesday an Arab League plan to end nearly eight months of bloodshed in the revolt-hit country, as the Arab organization urged Damascus to “seriously” implement the approved roadmap.

The agreement announced at a meeting of Arab foreign ministers in Cairo came amid huge pressure on President Bashar al-Assad's regime, even from traditional allies such as China, to end weeks of prevarication and sign up to the deal drawn up by the pan-Arab bloc.

U.N. chief Ban Ki-moon on Wednesday demanded an immediate end to the Syrian government's crackdown on civilian protesters that has killed more than 3,000 people since mid-March, according to U.N. figures.

"Killing civilians must stop immediately in Syria," Ban told a news conference in Tripoli on his first visit to Libya since the eruption in February of the uprising which toppled veteran tyrant Moammar Gadhafi.

The March 14 General Secretariat condemned on Wednesday Syria’s ongoing violations of Lebanon’s border in the East and West and its abduction and persecution of individuals in the country.

It said after weekly meeting: “We hold the Syrian regime, Hizbullah, and official security authorities responsible for the complete violation of Lebanon’s sovereignty by Syria.”