A Nashville woman was heard screaming for help by witnesses before she was found dead – police were able to track her alleged killer down using dashcam footage from a helpful civilian and a detective who had worked a case involving his twin. Last week, the Metro Nashville Police Department announced the arrest of 29-year-old Paul Park in connection with the death of 34-year-old Alyssa Lokits. The woman was exercising on the Mill Creek Greenway trail in Nashville on Monday, Oct. 14. Security cameras show Park allegedly emerging from between two parked vehicles and "following her at a brisk pace," the department wrote in a press release. After the two left the view of the camera, witnesses heard a woman scream "Help! Then, police said, the witnesses heard gunfire. Paul Park, 39, was arrested by the Metro Nashville Police Department on Oct. 15 in the death of Alyssa Lokits. Park was seen a short while later with scratches on his arms and blood on his clothing as he returned to his gray BMW sedan. Detectives didn't get a break in the case until a local resident provided them with dashcam footage, which showed part of Park's license plate and a clearer image of his face. A homicide detective who reviewed the footage recognized Park as the identical twin brother from a suicide case that she had worked in December 2021, CBS News reported. "I pray that we don't have an incident where we don't have a dashcam, or we don't have someone helping us like we had in this case," MNPD Chief John Drake said at a press conference. "I'm so thankful that our people got on this – we need technology." Even without the helpful civilian's footage, new technology pioneered by artificial intelligence software can help police investigate cases like the Nashville killing. Veritone is one of the companies spearheading that movement. The license plate of Paul Park's gray BMW sedan wasn't captured on surveillance footage – but thanks to a partial license plate number captured by a hiker's dashcam, police were able to arrest the accused killer. Veritone Track, one of several functions in a suite of services for law enforcement, uses artificial intelligence to run one photo or video of a vehicle – like the video captured on the park's surveillance footage – against stoplight cameras, body-worn cameras and other municipal surveillance footage available to police to find a match. "Both federal and local law enforcement have a major data problem," Veritone CEO Ryan Steelberg told Fox News Digital. "They are now capturing body camera [footage] and dashcams.