Police have started an investigation n Poplar BluffThe Poplar Bluff/Butler County Major Case Squad has been activated. Police say one victim was shot at Bacon Park and three others shot on Wallace Street on Sunday afternoon. They say the first was a 23-year-old male who was shot at Bacon Park. The victim suffered critical injuries from a single gunshot. According to police, the 23-year-old was first taken to Poplar Bluff Regional Medical Center and later airlifted to a St. Louis hospital. Officials say hree other individuals were shot on Wallace Street within a half hour of the first shooting. The victims include a 56-year-old man, a 48-year-old man and a 26-year-old female. Currently, police are still working to determine if the shootings are connected. At this time the suspect or suspects remain at large. Investigators are looking for information about the identity of a man caught on video walking down the middle of a street. Police said the man in the video is wanted in connection to the shooting investigation. Anyone with information about the suspect or the shootings is asked to contact Detective Dan Mustain at email@example.com or 573-686-8632.