Atlanta police speak to potential witness of fatal park-stabbing

Atlanta Police have spoken to one possible witness in the July 28 murder at Piedmont Park.

Atlanta police have spoken with a jogger who may have witnessed the stabbing death of a woman in Piedmont Park last week. Police are ramping up the search for possible witnesses of the "gruesome" stabbing death of Katie Janness, 40, and her dog Bowie, who were killed on July 28. Authorities shared photos Friday morning of a jogger who could be a possible witness. Atlanta Police told ABC News that as of Friday afternoon the man pictured "has come forward and is cooperating with investigators at this time." He's not a suspect at this time or accused of any wrongdoing, police added. On Wednesday APD released surveillance video and photos showing people in the area of Piedmont Park around the time Janness was murdered, asking for those people to come forward or for the public to identify them as possible witnesses.