BNP candidate Kazi Rafiqul Islam from Bogura-1 (Sariakandi-Sonatala) constituency has been identified as the highest loan defaulter among all seven constituencies in Bogura district. According to his affidavit submitted on December 29, 2025, he owes a total of Tk 762 crore, including Tk 261.6 crore in loans from First Security Islami Bank PLC. Allegations have also surfaced that he concealed information about an additional Tk 396 crore in defaulted loans. The bank filed a case against him and others in October 2025 after the loans remained unpaid.

Rafiqul Islam, a 69-year-old professional businessman and former BNP Member of Parliament elected in 2001, is also the managing director of RANS Real Estate Ltd., from which he personally guaranteed loans worth Tk 396.23 crore. His affidavit lists Tk 36 crore in cash, multiple bank accounts, and various assets jointly owned with his wife, Kazi Rashida Islam. He reported Tk 64.38 crore in total assets and paid Tk 3.8 lakh in income tax for 2025.

Reports indicate that he obtained a stay order from the High Court regarding his defaulted loans. Rafiqul Islam stated that all information in his affidavit is accurate.