The arrestee was identified as Abdul Hai, member of Sylhet District BNP and senior joint-secretary of Biswanath upazila unit BNP.
The accused was produced before the court showing him arrested in the explosive case filed by police, said Md Samsuddoha, officer-in-charge of Biswanath Police Station.
On September 2, four crude bombs were blasted simultaneously in different spots of the town. However, no one was injured in those blasts.
Later, Sub-inspector Sabuj Kumar of Biswanath Police Station filed the case accusing 50-60 unnamed people including Abdul Hai.