We don't know if the people in the photos (other than the jogger) were identified and talked to. The jogger talked to police at least twice. But the man you are referring to, in white, with what appears to be a dark splotch on his side, is seen in the photo leaving the park via the 12th street entrance at 12:25 a.m. That is about the earliest time Katie's attack could have occurred, but is a third of a mile away. So i don't think it is possible he is the killer. But I do wonder if the was located and interviewed. I think with most of these photos, the APD wanted to talk to these people to see who else they saw in the park that night.