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People gather at the site of a bomb explosion at a road in Kaduna, Nigeria on Sunday, April 8, 2012. An explosion Kaduna in central Nigeria that has seen hundreds killed in religious and ethnic violence in recent years, causing unknown injuries as diplomats had warned of possible terrorist attacks over the Easter holiday, police said.
People gather at the site of a bomb explosion at a road in Kaduna, Nigeria on Sunday, April 8, 2012. An explosion Kaduna in central Nigeria that has seen hundreds killed in religious and ethnic violence in recent years, causing unknown injuries as diplomats had warned of possible terrorist attacks over the Easter holiday, police said.(AP Photos/Emma Kayode)