Counter Terrorism officials claimed to have arrested a member of "Neo JMB", who attempted to go to Syria but returned home from Turkey recently, in Dhaka's Darussalam on Saturday.
Minhaz Hossain (38), an active member of the militant outfit, was captured around 6:30pm while meeting other operatives to plan for sabotage, said Walid Hossain, deputy commissioner (media) of Dhaka Metropolitan Police.
He had communicated with members of international militant group Hayat Tahrir al-Sham (HTS), said Counter Terrorism and Transnational Crime (CTTC) unit.
Officials said they were on high alert after receiving information that a man attempted to go to Syria but returned from Turkey in December last year. Then Minhaz was identified and subsequently arrested.
As he failed to enter Syria, he returned home, went into hiding in Khulna and set up communication with "Neo JMB" in the country, the sources said.
According to law enforcers, Minhaz was born in Bangladesh but spent most of his childhood in Pakistan after their family shifted there. He later moved to USA, and visited some other countries including Malaysia and Brunei before returning to Bangladesh in 2017.