A Russian plane carrying humanitarian aid for Syrian refugees has headed to Beirut, Russia's Emergency Situations Ministry announced on Wednesday.

“An IL-76 aircraft has headed to the Lebanese capital,” Russia Today television quoted the ministry as saying.

Internet and telecommunications in Syria were down across the country, the state news agency SANA reported on Wednesday, saying a fault with a fiber-optic cable was to blame.

"Maintenance and repair work is underway to reestablish the Internet and telecommunications across Syria as soon as possible," Bakr Bakr, the director-general of Syria's telecoms firm told SANA.

Russian Foreign Minister Sergei Lavrov on Wednesday called on the Syrian opposition to support Moscow and Washington in their efforts to work towards convening a peace conference to end the bloodshed in Syria.

"It is important for all participants to express articulate support for the Russian-US initiative to implement the Geneva communique," Lavrov was quoted as saying in the Swedish town of Kiruna by Russian news agencies.

Syrian troops backed by tanks and warplanes on Wednesday fought to repel an attack on the central prison in Aleppo after rebels blew up its walls in suicide car bombings, a watchdog said.

Around 4,000 prisoners including Islamists and common law criminals are held in the prison on the outskirts of the northern city, which is largely under rebel control, Rami Abdel Rahman of the Syrian Observatory for Human Rights said.

Two projectiles fired from Syria hit the Israeli-occupied Mount Hermon on Wednesday morning without causing damage or injuries, an Israeli army spokeswoman told Agence France Presse.

"There were two explosions on the Israeli side of the Hermon, we are examining the incident," she said. "We believe this was a result of the domestic situation in Syria."

The Free Syrian Army vowed on Wednesday to punish those committing atrocities, as anger mounted at a video showing a rebel filmed apparently cutting out and eating the organs of a soldier.

"Any act contrary to the values that the Syrian people have paid their blood and lost their homes to will not be tolerated, the abuser will be punished severely even if they are associated with the Free Syrian Army," the main rebel group said in a statement.

Lebanese members of the Syrian leader's Alawite sect fear their tiny community will be a casualty of the civil war raging in the neighboring country.

Already, Sunni Muslim extremists have stoned a school bus, vandalized stores and beaten or stabbed a number of men in a wave of attacks against Lebanese Alawites, stoking fears of even more violence should Syrian President Bashar Assad be removed from power.

The Syrian regime and its allies will refuse any "dictate" at an international peace conference, particularly concerning the departure of President Bashar Assad, a minister said.

The Syrian opposition and several of its allies have repeatedly demanded the departure of Assad in order to end the bloody conflict roiling Syria for more than two years.

A Syrian rebel who was filmed apparently cutting out and eating the organs of a soldier has defended his actions as revenge for regime atrocities, Time magazine reported on Tuesday.

The U.S. news weekly said it had talked by Skype with the fighter, identified as Khalid al-Hamad, who appeared in a video that sparked outrage and condemnation, including from the Syrian opposition.

More than 94,000 people have been killed in more than two years of conflict in Syria, the Syrian Observatory for Human Rights said in a newly-revised toll on Tuesday.

The watchdog group said it revised the toll -- just two days after it announced a tally of 82,257 dead -- after receiving new information from regime-controlled Alawite areas of the Sunni-majority country.