On March 16, Saddam conducted chemical attack, martyring more than 5,000 citizens and injuring more than 10,000 others in Halabja.
Tens of thousands Halabja citizens were forced to flee to camps on borders with Iran to get immune of the deadly attacks and more than 70 families lost their children in the movements.
'This terrible event remains the most lethal use of chemical weapons against a civilian population in history. The attack left a legacy of pain and suffering for the survivors, their families, and their community,' the statement reads.
'Today, we commemorate this tragic event with respect for its victims, as well as a renewed commitment to ensuring such tragedies are never repeated,' Arias reiterated.
'On behalf of the Organisation for the Prohibition of Chemical Weapons, I not only offer our deepest sympathies to the authorities and residents of Halabja, but also our promise to maintain our efforts to eradicate the threat of these terrible weapons,' he noted.
'The Chemical Weapons Convention is a bond shared by 193 countries to exclude completely the possibility of the use of chemical weapons. Over the 22 years of action under its obligations, we have made impressive progress towards this noble goal. To ensure that future generations will be spared the suffering that occurred in Halabja, let us recommit ourselves to the complete elimination of chemical weapons from the world.'
Earlier surprisingly, a victim of Iraqi Saddam Hussein's chemical bombardment on Halabja, who sought haven in Iran when at the age of seven and grew up in an Iranian family, will be returned to Iraq in a ceremony on Tuesday to be reunited with his family after 31 years.
Head of the Halabja Chemical Weapons Victims Society Luqman Abdulqader said after three decades of announcement that he was dead in action, the Halabja resident was identified on a DNA test that he belonged to a Kurdish family in Erbil.