A Nairobi-bound Boeing 737 crashed minutes after an early-morning takeoff from Addis Ababa Sunday, killing all 149 passengers and eight crew on board, Ethiopian Airlines said as world leaders offered condolences to distraught next-of-kin.The carrier's CEO Tewolde GebreMariam told journalists the plane, delivered to Ethiopia on November 15, had flown in from Johannesburg early Sunday, and spent three hours in Addis before it was "despatched with no remark", meaning no problems were flagged.It "underwent rigorous first check maintenance" on February 4, tweeted the airline, which changed its logo on Twitter to black and white from its trademark green, yellow, and red.Asked if the pilot had made a distress call, the CEO said "the pilot mentioned that he had difficulties and he wants to return. He was given clearance" to turn around.The senior captain, Yared Getachew, had some 8 000 flight hours under his belt.Ethiopian and American investigators will probe the crash, said GebreMariam.People from 35 countries and a UN passport-holder were on board flight ET 302 which ploughed into a field 60 kilometres southeast of Addis Ababa, GebreMariam said at a media conference, lamenting this "very sad and tragic day.""We can only hope that she is not on that flight," Peter Kimani, who had come to fetch his sister at Nairobi's Jomo Kenyatta International Airport (JKIA), told AFP after news of the disaster reached those waiting in the arrivals hall.No South African nationals were on board. Several passengers worked for UNNigeria's foreign affairs ministry says a former ambassador is among the victims of the Ethiopian Airlines crash, AP reported.A statement says Abiodun Oluremi Bashua was a retired career envoy who served in various capacities in Iran, Austria and Ivory Coast.It says the ambassador, born in 1951, was a "seasoned UN expert" with experience in several United Nations peacekeeping missions in Africa.A UN official says the United Nations expects that about a dozen passengers affiliated with the world organization were on the Ethiopian Airlines jet, but it could be more.The official, speaking on condition of anonymity because of the sensitivity of the issue, said on Sunday that national delegates who might have been heading to UN meetings, including the UN Environment Program's assembly, wouldn't be included in the count.The World Food Program is confirming that two of the eight Italian victims aboard the Ethiopian Airlines jet worked for the Rome-based UN agency.A WFP spokeswoman identified the victims as Virginia Chimenti and Maria Pilar Buzzetti.Another three Italians worked for the Bergamo-based humanitarian agency Africa Tremila: Carlo Spini, his wife Gabriella Viggiani and the treasurer, Matteo Ravasio, according to AP.In addition, Paolo Dieci, a prominent aid advocate with the International Committee for the Development of Peoples, known by its acronym CISP, was killed.Also among the Italian dead was Sebastiano Tusa, a noted underwater archaeologist and the Sicilian regional assessor at the Culture Ministry. RAI state television said he was heading to Malindi, Kenya to participate in a UNESCO conference on safeguarding underwater cultural heritage in east Africa, which opens Monday.The father of a British woman named Joanna Toole has told the DevonLive website that he has been informed that she was among the people who died in the Ethiopian Airlines crash.Adrian Toole said his 36-year-old daughter Joanna was traveling for her work for the United Nations.'Massice crater'State-owned Ethiopian Airlines, Africa's largest carrier, said the ill-fated Boeing 737-800MAX had taken off at 08:38 from Bole International Airport and "lost contact" six minutes later.Scheduled to land in Nairobi at 10:25, it came down near the village of Tulu Fara outside Bishoftu.An AFP reporter said there was a massive crater at the crash site, with belongings and airplane parts scattered widely.Rescue crews were retrieving human remains from the wreckage.Ethiopian Airlines confirmed "there are no survivors," adding it was too early to speculate about the cause of the crash.Police and troops were on the scene, as well as a crash investigation team from Ethiopia's civil aviation agency.In the Kenyan capital, family members, friends, and colleagues of passengers waited for news at the airport."I am waiting for my colleague, I just hope for the best," added Hannah, a Chinese national.Carleton University has confirmed that professor Pius Adesanmi was among the 18 Canadians who died in the Ethiopian Airlines crash today. He was "a towering figure in African and post-colonial scholarship." He was also beloved in Nigeria as a writer and columnist. pic.twitter.com/D95M4eknMl— Geoffrey York (@geoffreyyork) March 10, 2019 Hoping for the bestEthiopian Airlines said Kenya had the largest number of casualties with 32, followed by Canada with 18, Ethiopia with nine, then Italy, China, and the United States with eight each.Britain and France each had seven people on board, Egypt six, and Germany five.Twelve countries in Africa, and 14 in Europe had citizens among the victims.Accident Bulletin no. 3Issued on March 10, 2019 at 4:59 PM pic.twitter.com/5UOxsbl24f— Ethiopian Airlines (@flyethiopian) March 10, 2019 African Union commission chief Moussa Faki Mahamat spoke of "utter shock and immense sadness", while Ethiopian Prime Minister Abiy Ahmed's office tweeted it "would like to express its deepest condolences to the families of those that have lost their loved ones."Kenya's President Uhuru Kenyatta said he was "saddened" by the news and Mahboub Maalim, executive secretary of the IGAD East African bloc, said the region and the world were in mourning."I cannot seem to find words comforting enough to the families and friends of those who might have lost their lives in this tragedy," Maalim said in a statement.The plane's manufacturer, US giant Boeing, said it was "deeply saddened to learn of the passing of the passengers and crew on Ethiopian Airlines Flight 302, a 737 MAX 8 airplane. "We extend our heartfelt sympathies to the families and loved ones of the passengers and crew on board and stand ready to support the Ethiopian Airlines team."Pilot 'difficulties'The Boeing 737-800MAX is the same type as the Indonesian Lion Air jet that crashed last October, 13 minutes after takeoff from Jakarta, killing all 189 people on board.The last major accident involving an Ethiopian Airlines passenger plane was a Boeing 737-800 that exploded after taking off from Lebanon in 2010, killing 83 passengers and seven crew.Loved ones waiting at JKIA were brought to the onsite Sheraton Hotel where they were debriefed and offered counselling. Journalists were not allowed inside, but could hear sobbing coming from inside.For one family member waiting in Nairobi there was a happy ending.Khalid Ali Abdulrahman was waiting for his son who works in Dubai and feared the worst when a security man told him the plane had crashed."I was shocked, but shortly after, my son contacted me and told me he is still in Addis and did not board that flight, he is waiting for the second one which has been delayed."