Former United Nations Secretary General Kofi Annan described the disaster as "heart-wrenching and tragic" as he arrived at Amsterdam airport for a flight today.
"I pray for the families and share their pain," he said.
He also signed a condolence book, which is with floral tributes outside a departures terminal.
He wrote: "What a tragedy for the families, the nation and the HIV-AIDS community.
We offer our deepest condolences to the families and hope a thorough investigation will be conducted."
His entourage would say only that he was in Amsterdam on private business and it is not known if he has met any relatives from the doomed flight or Government officials.