(CNN) Paul Njoroge and his father-in-law John Quindos Karanja walked away from the site where their wives and children died with bags of soil in their hands.

Three generations of their family were on the Ethiopian Airlines flight to Kenya that crashed last week just minutes after takeoff in Addis Ababa, Ethiopia, killing all 157 people on board.

John Quindos Karanja's wife, Ann Wangui Karanja; their daughter, Carol Karanja; and Carol Karanja's three children, Ryan Njoroge, 7, Kellie Pauls, 4, and 9-month-old Rubi Pauls were on the plane. They had been traveling to Kenya from Canada, where Carol Karanja and her children lived.

Ann Wangui Karanja was returning home after traveling to Canada to visit her grandchildren and daughter, who worked as an accountant at an energy firm. Upon the family's arrival in Kenya, John Quindos Karanja would have been meeting Rubi, who was born in Canada, for the first time.

Paul Njoroge mourned his mother-in-law, wife and children at the crash site and reflected on their last moments.

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