The man, around 40 years old, arrived in the village this morning, but when people asked him who he was and where he was coming from, he could give no answers, said a police official.
As rumours about a gang of child-lifters were swirling around in the area, the villagers thought the man was a part of some such gang and beat him to death with sticks, he said.
Around ten people from the village were arrested by the police and a further probe was on.
Recently, two men in Assam were killed by a mob on suspicion of being child-lifters.
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