Iranian President Hassan Rowhani on Saturday pointed to the use of chemical weapons in Syria, three days they allegedly killed hundreds of people in attacks near Damascus.

Syria's main opposition group, the National Coalition, accused the government of "massacring" more than 1,300 people in chemical weapons attacks on Wednesday.

The U.N. chief Friday condemned the firing of rockets against Israel, urging all sides to exercise "maximum restraint," and cooperate with the U.N. force in Lebanon to prevent an escalation.

In a statement, U.N. Secretary General Ban Ki-moon said he was "greatly concerned" by the incident, "which is a clear violation of resolution 1701" passed in 2006.

Hizbullah on Friday condemned the Israeli air raid that targeted the Naameh area south of Beirut at dawn, describing it as a “dangerous and flagrant violation of Lebanon's sovereignty.”

It said the attack “confirms the enemy's criminal intentions towards Lebanon and its people, which requires permanent vigilance and full preparedness to confront its hostile adventures.”

The United Nations Interim Force in Lebanon command announced on Friday that it had received Israeli confirmation that it had carried out an airstrike in the Naameh Valley between Beirut and Sidon.

It said in a statement that Force Commander Major General Paolo Serra had contacted the Lebanese and Israeli army chiefs to urge them to exercise restraint.

The possession of a nuclear bomb would threaten Iran's security, the country's foreign minister, Mohammed Javad Zarif, said in comments reported on Friday.

"We consider the possession of nuclear arms doesn't conform with the interests of the country and threatens the security of Iran," Zarif said, adding however that Iranians "will not give up their rights."

President Michel Suleiman tasked on Friday caretaker FM Adnan Mansour to file an urgent complaint to the U.N. Security Council against Israeli attack on Naameh.

“The border violations must be resolved by UNIFIL's (United Nations Interim Force in Lebanon) investigation committee and not by aggression or violating the sovereignty (of Lebanon),” Suleiman said.

The Israeli air force struck a Palestinian group in Lebanon on Friday, officials said, hours after a different organization said it fired four rockets at the Jewish state from Lebanon.

Israeli aircraft "targeted a terror site located between Beirut and Sidon in response to a barrage of four rockets launched at northern Israel yesterday (Thursday)," the military said.

A Palestinian from Gaza who was snatched from Ukraine and is being held in an Israel prison has begun refusing food, a prison spokeswoman said on Thursday.

Dirar Abu Sisi "was on the third day of a hunger strike, following which all his personal items and electric appliances were removed from his cell, except for a fan," Israel Prison Service spokeswoman Sivan Weizman told Agence France Presse.

Loyalty to Resistance bloc MP Hasan Fadlallah on Thursday refused to condemn a rocket attack on Israel from Lebanon that took place earlier in the day, although he denied any involvement by Hizbullah in the incident.

"We were not aware that a rocket attack will happen and we have nothing to do with it,” Fadlallah said in an interview on LBCI television.

Israeli Prime Minister Benjamin Netanyahu on Thursday called the possible use of chemical weapons in Syria "terribly disturbing", accusing Iran of using the country as a "testing ground".

"The reported use of chemical weapons against innocent civilians is terribly disturbing," he said in a statement.