GUWAHATI: Dispur police on Wednesday questioned four persons, Arup Talukdar, Hirak Jyoti Rajbongshi, Dishant Bhagawati and Gitartha Deka, on charges of heckling singer-composer Zubeen Garg on August 12 night in Ganeshguri, Guwahati. The four were detained by Dispur Police from Sixmile area of Guwahati after they addressed a pressmeet regarding