MOSCOW (Reuters) - The suicide bomber who killed at least 35 people at Moscows main airport Monday was a 20-year-old native of the North Caucasus, Russian investigators said. Federal Investigative Committee Spokesman Vladimir Markins announcement Saturday was the first official confirmation the bomber came from Russias volatile North Caucasus. We will not release his name today...because the investigation to identify and apprehend the organisers and accomplices is still ongoing, he told reporters in a televised address.