wrong bus stop when he was gunned down on october 19th, just blocks away from where 22-year-old benjamin mitchell was shot and killed waiting for a bus on october 9th. two days after that, a 32-year-old woman was also murdered. the police tell us they have received 144 tips on thursday alone, the day they released this new surveillance video of a quote person of interest. the video was taken of the night of the first murder on october 9th. it shows a man walking with a hoodie and then moments later running in the opposite direction on a street close to the scene and at about the same time as the murder of benjamin mitchell. police zeroing in particularly on a potential tell here from the man's right hand. you can see he's seen flipping his cell phone. police believe it could be a habit that could help identify the person in this video. the interim police chief says this person could be the key to solving these murders but is not necessarily a suspect, though he asks, if you are not the killer, why not come forward already? lots of questions in a community