Eleven people were killed in and around the Kenyan capital during a surge in violence overnight, including two people found beheaded and eight killed in a shootout, police said Friday. Three people - including the two who were beheaded - were found slain in Banana Hill on the outskirts of Nairobi, where police have been cracking down on a banned sect called Mungiki, which is accused in a string of beheadings. Kiplimo Rugut, the Provincial Commissioner of Central Province, confirmed the three were found dead. A police officer at the scene who didn't want to be named because he was not authorized to speak to the press said two were beheaded. In a separate incident, police shot eight suspects who were trying to rob a warehouse of the Kenya Electricity Generating Company Ltd.," said Julius Muthuri, police official in the industrial area of Nairobi.