Officer-In-Charge (OC) of Meherpur Sadar Police Station Rabidul Islam has been stand released for negligence of duty during Monday's clash over tender dropping at local LGED office. Sources said the officer-in-charge has been asked to join Rajshahi Metropolitan Police (RMP). Police said a gang led by district Jubo League General Secretary Abdullah Al-Mamun Bipul attacked Golam Rasul, president of Meherpur Sadar upazila Awami League, when Rasul and his men reached LGED office to drop tender documents. The attackers exploded six bombs, leaving 30 people injured. They also hurled bombs at a Rab vehicle partly damaging its front side, Rab sources said.