MAIDUGURI - Twelve people were killed Wednesday evening after four suicide bombers struck in the regional capital of Maiduguri in northeast Nigeria, rescue workers told AFP. Two men and two women blew themselves up in the Muna neighbourhood at around 1700 GMT, the chief security officer of Borno State's emergency response agency, Bello Dambatta, said. "The total people who died in these four suicide bombings is 12, 16 including the bombers," he told AFP. "Twenty-two people were taken to the Borno State Specialist Hospital for treatment to various injuries."