At least four persons were killed and 30 others injured yesterday in a clash between law enforcers and locals in Banshkhali upazila of Chittagong over installation of a coal-based power plant, said police...two rival groups announced that they would hold rallies at the same venue in the afternoon -- one in support of installation of a power plant by S Alam Group and the other against it...Despite repeated attempts, The Daily Star couldn't reach Mohammed Saiful Alam, chairman and managing director of S Alam Group, for comments...On condition of anonymity, a senior official of the group said, “This issue concerns the police. They imposed section 144… We have nothing to say about it.”