Allahabad, May 28: Unidentified assailants shot dead a trader while he was returning home alongwith with his wife in in Shahganj area, police said. Kulbir Singh (47), died on the spot after being shot in the chest last night by the two gunmen, they said. Personal enmity is stated to be the reason behind the murder, they said. The trader's murder is the second such incident in past four days as another trader Jasbir Singh was also shot dead by unidentified assailants on a railway bridge on Saturday last. Bureau Report