Ban expressed his sadness at the high number of victims of action claimed by the Islamic Jihad group status (EI), which claimed at least 41 lives in the neighborhood Barachne Burch, one of the strongholds of the Lebanese Shiite group Hezbollah.
The UN chief, in a statement from his spokesman, reiterated the organization's support to Lebanese institutions in their efforts to ensure the safety of the population.
Ban "trusts that will not allow this despicable act to destroy the relative calm that has prevailed in the country during the past year," says the note.
In that vein, the Korean diplomat stressed "the need for all parties to continue to work to preserve the stability and security of Lebanon."
Moreover, Ban urged that the perpetrators of the attack are quickly brought to justice.
According to the Lebanese authorities, at least 41 people were killed and 200 wounded in the double attack today, which hours later was attributed EI.
The terrorist group, Sunni confession, fighting against militants in Syria Hezbollah, a Shiite, who are allies of the Syrian President Bashar al-Assad regime in the civil conflict taking place in his country since 2011.
White House also condemned the attack
The White House and UN Secretary General Ban Ki-moon condemned the two attacks "terrorist" bomb the jihadist group Islamic State (EI) was attributed in front of a shopping center in a Hezbollah stronghold in the southern suburbs of Beirut, considered the worst against the Shiite movement from speaking on Syria to support the regime of Bashar al-Assad in 2013.
The military said the attacks were committed by two men wearing explosive belts found dead and a third "terrorist" who failed to detonate his bomb.
In turn, "The United States condemns in the strongest terms the horrifying terrorist attacks today (Thursday) in Beirut, Lebanon, that killed dozens and wounded hundreds more," said the spokesman for the National Security Council, Ned Price in a statement.
"Such acts of terror will only strengthen our commitment to support the institutions of the Lebanese state, including the security services to ensure a stable, sovereign and secure Lebanon," he added.
"We offer our deepest condolences to the families and loved ones of those killed and injured in this violent act. United States will stand firm with the government of Lebanon as it seeks to bring to justice those responsible for this attack, "said Price.
Jihadist Islamic State (EI) claimed the double attack on Thursday that killed at least 41 people, according to a statement released by internet.
The claim, transmitted through the usual channels of EI, said the first explosion occurred a motorcycle loaded with explosives, and the second a suicide.