The fire was brought under control by three firefighting units
They were arrested from the city’s Dewanji Pukur Lane office on Monday afternoon, Kotowali Police Station OC AKM Mohiuddin Selim told bdnews24.com.
“Shamsul Islam was holding secret meeting with party leaders at the Jamaat office,” he said.
Islam is an accused in various cases of sabotage, the OC added.