nearly triples the amount of charges against him and covers a decade when michelle knight, amanda berry and gina dejesus were raped in his cleveland home. homeland security secretary janet napolitano is resigning and plans to leave her post in september. no word yet on a successor. >> i have no names to float, if you will. i would say that the president greatly appreciates secretary napolitano's, you know, four plus years of service, and if you think about it, those four and a half years account for almost half of the existence of the department of homeland security, and she's done a remarkable job. >> secretary napolitano's next stop, academia. she's been nominated to become president of the university of california system. and an anonymous bidder bought a rare vintage mercedes race car for $30 million, five time world champion won two races in the mercedes benz which now has the distinction of being the most expensive car sold at public auction. anderson? >> randi, thanks. that does it for this special edition of "360." çñ