Rangpur, Feb. 11 -- As Rangpur division prepares for the national election, an unprecedented security operation has turned the region into a tightly guarded zone, with law enforcement agencies rolling out a six-tier security plan to ensure peaceful voting.

From char areas and remote villages to busy city centres, more than 4,500 polling centres across 33 constituencies are now under close surveillance.

Of these, 2,561 centres have been identified as risky and 827 as highly risky, prompting authorities to deploy additional forces, technology-driven monitoring and rapid-response teams.

Police officials say intelligence-led policing lies at the heart of the security strategy. Body-worn cameras will be used by police members at hundreds of...