As many as four people, including four abductors, were killed and two police personnel were injured in separate encounters on Saturday. According to details, the police conducted a search operation in College Chowk in Sahiwal to recover a boy abducted from Fareed Colony. During the operation, the kidnappers opened fire on police team, injuring two cops. Police retaliated and killed three robbers on the spot. Police also recovered the abducted boy and Rs 1.5 million ransom money from their possession. Three of the abductors fled from the scene. In another encounter in Miranpur area of Vehari, a robber, identified as Riaz alias Doctor, was killed while his gang fled from the scene. The police said that robbers killed in the encounters were wanted by various police stations in a number of robberies and kidnappings for ransom.