Taj’s brother lives next door but he and his wife say they have nothing to do with them. “Our relationship was never cordial because of their work,” the couple said. Police said the man arrested in Bulandshahr was from Multan in Pakistan and had overstayed his 15-day visa. He was to board the train on the day of the blast but did not. Police teams from Haryana are also looking at Aligarh, Saharanpur and Muzaffarnagar districts, sources said. The police in Faizabad has asked the district supply office to provide a list of persons who were issued ration cards in the last five years.