Police have detained BNP UK unit Joint General Secretary Shohidul Islam Mamun from his residence in Badambagich area of Sylhet.
Based on obvious allegation, the law enforcers arrested him from his residence on Monday afternoon, said Md Abdul Wahab, additional deputy commissioner (Media) of Sylhet Metropolitan Police (SMP).
The police official, however, denied disclosing the matter.
Meanwhile, sources at the SMP office said the secretary might have been detained for his involvement with the attack on Bangladesh High Commission in the UK, reports UNB.
Earlier on February 8, some leaders and activists of BNP attacked Bangladesh High Commission in the UK as its officials refused to accept a memorandum regarding Zia Orphanage Trust graft case.