Rajendra Pachauri has denied any wrongdoing, and claims that his email account and cellphone were hacked.
Zimbabwe's finance minister appealed Monday to the African Development Bank to ease the terms on the $566-million it is late in repaying.
The fire is believed to have started while maintenance work was being carried out on an air cooler.
Four African armies, Nigeria, Cameroon, Chad and Niger are currently on the ground directly engaged in the fight against Boko Haram.
Time is running out to stop Isis creating a Libyan stronghold that would threaten the security of Europe and neighbouring African states.
Boko Haram leader Abubakar Shekau vowed to disrupt Nigeria's general election, after two suicide attacks blamed on the group killed 38 people.
Cameroon says its army has detained 1 000 people suspected of having links to Boko Haram, after it killed 86 of the group's militants.
Leaders met in Cameroon to discuss Boko Haram as the extremist group invades Chad and causes election delays in Nigeria.
Copenhagen police said they had shot dead a man who opened fire on officers hours after two people were killed and five wounded in twin shootings.
Boko Haram stormed the restive city of Gombe, Nigeria, firing gunshots and throwing leaflets which urged residents to boycott the upcoming elections.