BNP leader Mizanur Rahman arrested on charges of conspiring to make the Gazipur city polls controversial has been remanded for two days.
Dhaka Metropolitan Magistrate Md Mazharul Islam issued an order allowing the police to interrogate Mizan in their custody.
Police detectives arrested Mizan, a retired army officer, from his home at Gulshan in Dhaka on Monday night after two audio clips of his phone conversations spread on the internet.
Four others for the same allegation were also arrested in Ashulia area on Tuesday, police said.
The magistrate also remanded Md Shafiqul Islam, 43, Md Dinnat, 26, and Md Asad Ali, 22.
Md Zunaid Hossain Joy, 16, was sent to Tongi Juvenile Correction Centre.
