A police official was arrested after shooting to death a woman, her seven-year-old son, and a man in broad daylight in Kushtia town yesterday. The incident took place in Customs Junction area around 11:45am. The victims are Asma Khatun, 27, her son Robin, and Shakil Khan, 34. All of them are from Naturia village of Kushtia's Kumarkhali upazila.