When we first heard about Heather Locklear's weekend arrest for driving under the influence of a controlled substance, we were most interested in the curious detail of the sunglasses she repeatedly ran over. Turns out, the entire case is full of curious details, and here's the biggest one: the witness who placed the call to 911 is a former Us Weekly staffer who's under investigation by the FBI for hacking into the magazine's computer system to locate celebrities. Oh, and she called the paparazzi immediately after her 911 call. Oh, and she also just happens to have a lucrative partnership with Locklear rival Denise Richards! Details and her kooky 911 call, after the jump:Jossip has the goods on the ex-Us staffer, Jill Ishkanian, who had left the magazine (which she then sued) to start a paparazzi agency called Sunset Photo & News (where she was embezzled from).