Opposition leader Mohamed ElBaradei on Saturday called for a boycott of Egypt's upcoming legislative elections, as the president rescheduled the first round after Copts complained it would clash with a Christian holiday.

"Called for parliamentary election boycott in 2010 to expose sham democracy. Today I repeat my call, will not be part of an act of deception," the Nobel Peace laureate and former head of the U.N. atomic watchdog wrote on Twitter.

The governor of Iraq's restive Diyala province was wounded in a suicide car bombing on Saturday that killed two of his guards and wounded six more, a police officer and a doctor said.

The bomber detonated an explosives-laden vehicle at Governor Omar al-Humairi's house in Baquba, the capital of Diyala province, a police lieutenant colonel said.

Yemeni troops shot dead a southern separatist on Saturday in clashes that erupted when activists blocked roads during a protest in the main port city of Aden, medics and activists said.

"One man was killed and two others were wounded by gunfire," a medic at Aden's Al-Naqib hospital told AFP on condition of anonymity.

The Syrian army's use of surface-to-surface missiles on Aleppo is part of a bid to advance on the northern city, swathes of which have fallen into rebel hands since mid-2012, a watchdog said Saturday.

"The army has been trying for weeks to come closer to Aleppo via its eastern entrance, in order to assault it. Elite troops are being sent... but so far the army has been unsuccessful," said Syrian Observatory for Human Rights director Rami Abdel Rahman.

The umbrella opposition National Coalition on Saturday condemned world powers for failing to act to stop the slaughter in Syria, as missiles killed at least 29 in second city Aleppo.

The remarks by spokesman Walid al-Bunni came after the Coalition had said it would form a government to run "liberated areas" of Syria and was pulling out of several international meetings in protest against world "silence".

International peace envoy Lakhdar Brahimi said Friday that a devastating bomb blast in the Syrian capital was a "war crime" that had left about 100 people dead.

The toll given by Brahimi was grimly higher than the 61 dead given by Syrian activists after a suicide bomber staged the attack Thursday near the entrance to President Bashar Assad's ruling party offices.

French freelance photographer Olivier Voisin, who was seriously wounded in Syria last month, was in critical condition Friday after an operation in Turkey, media watchdog Reporters Without Borders (RSF) said.

"Voisin was injured by shrapnel from an exploding shell while covering the operations of a katiba (armed opposition group) near Idlib," in northern Syria at the end of January, RSF said in a statement.

Syria's opposition National Coalition said Friday it will form a government to run "liberated areas" of the country, as least 12 people were killed and dozens wounded in a missile strike on the northern city of Aleppo.

International peace envoy Lakhdar Brahimi, meanwhile, said a devastating bomb blast in Damascus on Thursday was a "war crime" which had left about 100 people dead.

Hundreds of demonstrators took to the streets of Port Said on Friday to demand justice for protesters killed by Egyptian police, as a strike in the Suez Canal city entered its sixth day.

Protesters chanted against Islamist President Mohamed Morsi and his Muslim Brotherhood, while slamming the interior ministry it accuses of having killed at least 40 people in clashes with police last month.

A Shiite protester died of wounds after he was shot during clashes with Bahraini police on the second anniversary of the February 14, 2011 uprising, the opposition said on Friday.

Mahmud al-Jaziri, 20, succumbed on Thursday to wounds suffered when he was "hit with a direct shot to the head by regime forces during peaceful protests" marking the uprising, the main Shiite opposition al-Wefaq group said.