Days after the Central Bureau of Investigation (CBI) arrested three Railways personnel in the case related to the Odisha train tragedy for destruction of evidence and culpable homicide, seven officials were suspended on the charge of dereliction of duty, a top official said. The CBI had earlier arrested senior Section Engineer (signal) Arun Kumar Mahanta, Section Engineer Mohammed Amir Khan and Technician Pappu Kumar, who are also among those who have been suspended.