Former president Goodluck Ebele Jonathan has expressed shock over the death of ex United Nations Secretary-General Kofi Annan.
Jonathan has on Saturday afternoon joined those mourning Kofi Annan to write a heart broken tribute.
Kofi Annan who won the Nobel Peace Prize in 2001 for humanitarian work, died on Saturday aged 80.
Reports have it that he died in Switzerland, after a brief illness.
In his tribute, Jonathan wrote, "I am deeply saddened by the death of Kofi Annan, a world-renowned icon of peace and diplomacy.
"He was a distinguished and accomplished international public servant and one of Africa's most prominent diplomats.
"As the UN Secretary-General, Annan introduced far-reaching reforms that reinvigorated the UN systems and positively impacted international relations.
"A consummate diplomat, Annan successfully managed the contending powers in the UN and stood firmly for development, human rights, and a peaceful world; a commitment that earned him the Nobel Peace Prize.
"Even after leaving active service, Annan remained robustly engaged in promoting good governance, diplomacy, mediation, and humanitarian services. His demise is a sad loss to Africa and the World".