The United Nations Special Coordinator for Lebanon Derek Plumbly “strongly” deplored on Thursday the car bombing in the Beirut suburb of Haret Hreik, expressing his anger over the recurrent explosions in Lebanon.

"I express my outrage that this is the fourth bomb to have exploded in Beirut’s southern suburbs since July,” Plumbly said in a released statement, noting the “indiscriminate nature of these and other attacks in Beirut and the northern city of Tripoli.”

South Sudan's army has set up a probe into the killing of "innocent people", the government said Thursday, in the wake of grim reports of ethnic slaughter and atrocities.

The army has formed a committee "to investigate those involved in killing innocent people" the government said in a statement.

President Michel Suleiman stressed on Thursday that the same terrorists that carried out the blast in the Beirut neighborhood of Haret Hreik earlier in the day, are the ones planting terrorism, killing and destructing all Lebanese regions.

Suleiman's comments came shortly after a deadly explosion hit Beirut's Dahieh neighborhood, killing at least 4 people and wounding over 70 others.

The United States and the United Kingdom's embassies in Lebanon condemned on Thursday the “terrorist” bombing in Beirut's southern suburbs.

“We condemn today's terrorist bombing in (the Beirut neighborhood of) Dahieh,” the U.S. embassy said via its account on the social networking website Twitter.

An exchange of gunfire erupted on Thursday between the rival Tripoli neighborhoods of Bab al-Tabbaneh and Jabal Mohsen, in the wake of a deadly blast that rocked the Beirut southern suburb of Haret Hreik.

Heavy celebratory gunfire had erupted in Bab al-Tabbaneh as news broke that a bombing occurred in Hizbullah's stronghold in Dahieh, the thing that led to tensions in the two Tripoli districts.

Damascus "strongly" condemned on Thursday the deadly bombing that hit the southern Beirut neighborhood of Haret Hreik, calling for penalizing the “terrorists” behind it.

"Syria strongly condemns Dahieh's terrorist bombing,” the country's Information Minister Omran al-Zohbi told the state-run Syrian Arab News Agency.

Italy's Silvio Berlusconi on Thursday lodged an appeal against a conviction for paying for sex with a then-underage prostitute nicknamed "Ruby the Heart Stealer", his lawyers said.

The media magnate's defense team had previously announced their intention to appeal the July verdict, which saw the former premier sentenced to seven years in jail and banned from holding public office.

A suicide bomber detonated an explosives-rigged vehicle on Thursday near car dealerships in Baladruz, close to the Iraqi city of Baquba, killing 13 people, police and a doctor said.

The blast in Baladruz, north of Baghdad, also wounded 25 people, the sources said.

The deadly explosion that hit Beirut's southern neighborhood of Haret Hreik on Thursday afternoon drew a wave of condemnation by local political leaders that considered that terrorism is targeting all Lebanese people.

The blast killed at least 4 people and wounded 75 others.

U.S. Secretary of State John Kerry said Thursday that the thoughts of the American people were with Israel and its comatose former leader Ariel Sharon, whose health was rapidly deteriorating.

"Our thoughts, my thoughts are with the Sharon family," Kerry said ahead of a meeting with Israeli Prime Minister Benjamin Netanyahu.