Those who killed the commander of the Al-Quds, General Soleimani will face "severe revenge," said supreme leader of Iran, Ayatollah Ali Khamenei.

According to BBC, he also announced three days of mourning. 

“Martyr Soleimani is an international figure of the Resistance, and all the devotees of Resistance are now his avengers. All the friends and foes must know that the path of Jihad of the Resistance will continue with double motivation, and a definite victory awaits those who fight in this auspicious path. The demise of our selfless and dear general is bitter, but the continued fight and achievement of the final victory will make life bitterer for the murderers and criminals." Press TV reported quoting the leader.

Earlier, Pentagon said they killed the commander.

"At the direction of the President, the US military has taken decisive defensive action to protect US personnel abroad by killing Qasem Soleimani," a Pentagon statement said. "This strike was aimed at deterring future Iranian attack plans. The United States will continue to take all necessary action to protect our people and our interests wherever they are around the world."