NAIROBI, Kenya — Kenyan and American investigators began a sweeping inquiry on Wednesday into a shopping mall massacre here that killed scores of people, sifting through rubble, studying closed-circuit television footage and bringing in more resources to identify the attackers.
Tyler Hicks/The New York Times
A grief counselor, left, comforted Agnes Mutua, who had just identified her nephew, Christopher Chewa, 26, on Wednesday at a mortuary in Nairobi.