BJP MP Arjun Singh suffered head injuries on Sunday, after police cracked down on party workers who had set up a road blockade at Kankinara in West Bengal's North 24 Parganas district. The lawmaker, seen in a blood-soaked shirt and a bandage, claimed that the Barrackpore Police Commissioner had struck him while he and his party colleagues were protesting against the "capture" of a BJP office in nearby Shyamnagar.