A second suspected nuclear installation has been identified in Syria, according to commercial satellite photos, the Wall Street Journal reported.

The publishing Wednesday of the photos by Washington's Institute for Science and International Security could increase pressure on the United Nations to demand wide new inspections of suspect Syrian facilities during a March board meeting of the International Atomic Energy Agency.

Charred skeletons of some 50 people were found in a makeshift prison next to a military base abandoned by elite troops loyal to Moammar Gadhafi in southern Tripoli on Saturday, an Agence France Presse reporter saw.

Local residents discovered the remains after rebel forces took control of the base of the 32 Brigade commanded by Gadhafi's son Khamis in the district of Salaheddin.

Arab foreign ministers meeting in Cairo on Saturday were to warn Syria they will no longer remain silent on its deadly crackdown on dissent, an Arab diplomat said.

The meeting, being held in the absence of Syrian Foreign Minister Walid Muallem, was to move first to re-admit Libya in the presence of the rebel government's Prime Minister Mahmud Jibril, who was in Cairo.

At least 25 people, all but one of them women and children, were killed when a bus caught fire after being hit by a car in the northern Iraqi city of Kirkuk on Saturday, a police chief said.

The families were travelling on the bus from Baghdad to the northern Kurdish province of Dohuk when the vehicle got stuck in a pothole, according to Kirkuk province police chief Major General Jamal Taher Bakr.

Iran on Saturday inaugurated a plant for producing carbon fiber, which it is banned from importing by international sanctions targeting dual-use materials, the official IRNA news agency reported.

"Today we are witnessing the fulfillment of a strategic project of the Ministry of Defense," Defense Minister Brigadier General Ahmad Vahidi said as he inaugurated the production facility, IRNA reported.

Syrian security forces killed two anti-regime demonstrators on Saturday morning and wounded another 15 in Damascus and in the northern province of Idlib, rights activists said.

In the capital's western quarter of Kafar Susseh, one demonstrator was killed and 10 hurt when club-wielding security forces attacked a group of people leaving prayers at the Rifai mosque, the Syrian Observatory for Human Rights said.

Seven Yemeni soldiers were killed and six others wounded on Saturday in clashes with suspected al-Qaida forces in the southern province of Abyan, a military officer said.

The fighting took place near Dofes, a village south of the provincial capital of Zinjibar that has been occupied by extremist elements since the end of May, the source said.

A convoy of six armored cars that could be carrying high Libyan officials, even fugitive leader Moammar Gadhafi, crossed from Libya into Algeria on Friday, the official Egyptian news agency reported quoting a Libyan rebel source.

The report could not immediately be confirmed from Algerian or Libyan sources.

Eighteen people were killed and 26 wounded in a suicide bombing at the Cherchell military academy west of Algiers, the defense ministry said Saturday revising its own toll given hours earlier.

The ministry said 16 officers and two civilians were among the dead. Twenty wounded had been discharged but six people were still in hospital, one in critical condition.

The United States and Israel are monitoring Syria's suspected arsenal of weapons of mass destruction, fearing that terror groups could take advantage of the revolt against President Bashar Assad to obtain chemical agents and long-range missiles, The Wall Street Journal reported late Friday.

Citing unnamed officials from both countries, the newspaper said U.S. intelligence services believe Syria's nonconventional weapons programs include significant stockpiles of mustard gas, VX and Sarin gas and the missile and artillery systems to deliver them.