Mobs in the capital and four other districts beaten to death a man and a woman and injured four others on suspicion of being child kidnappers. Besides, three people, including a woman, were beaten by a mob on similar grounds in Thakurgaon on Friday afternoon. Three of the victims were mentally challenged women. Amid such incidents of mob violence, the police headquarters yesterday in a press release said it had noticed a rumour was being spread about human sacrifices at the Padma Bridge.