They actually did post the full report of it. It was received on radio at 11:51, Dispatched police at 11:53, and Arrived at 11:54, before the pictures security cameras of "Mike Brown" in the store at 11:55, in the article you posted. At page 11 of the report there shows a log, a continuation of the log in page 10. In it, it shows at 18:54 that they still could not find the person that matched the description.Here's the report: http://msnbcmedia.msn.com/i/MSNBC/Sections/NEWS/Ferguson.pdf