Three men held in Kenya in death of Norwegian aid worker, missionary 13 (UPI) -- A 73-year-old Norwegian aid worker and missionary has been killed in an apparent robbery attempt in Kenya, Norwegian embassy officials said Friday. Jan Kristensen was killed at his home in Kisumu, allegedly by three men who came to his home and were let in by the guard, the Norwegian Broadcasting Corp. reported. His family later found him dead. Kristensen worked in Kenya for more than two decades, and was the founder of a project to get homeless children off the streets. He had been honored for his work by being awarded a silver medal from Norway's King Harald.