Wang Dong said with embarrassment, "We can't know for sure, but we are investigating. We have dispatched personnel to visit and investigate the crime scene. After all, drones need to be operated by someone, and the remote control range of these drones can't be very long. If we investigate the area nearby, we should be able to find some clues. At the same time, we have also started investigating some illegal ironwork shops in the vicinity to see if we can find the source of the steel ball bullets."
Wei Chao fell into thought, and suddenly, a police officer below said, "Captain, I heard something before that might be related to this case."
Wei Chao's spirits lifted, and he quickly asked, "What did you hear?"
