The group, many of whose members have been named by the Islamic State (IS) as its operatives in Bangladesh, was plotting this attack under the leadership of it's new operational leader Moinul Islam alias Abu Musa.
This information was gleaned from the latest raid on a New JMB raid in Dhaka's Ashkona, a police Counter Terrorism and Transnational Crime (CTTC) unit officer told the Dhaka Tribune yesterday.
The raid took place on December 24.
Although the CTTC would not disclose details of Christmas day attack, a highly placed source in the force said that the documents they had received from the Ashkona safe house and statements of the surrendered female militants indicated that the attack would have taken place at Banani Church using at least one member of a female squad.
CTTC chief Monirul Islam said Surjo Villa in Ashkona was being used by New JMB as a shelter home, where Musa used to live with his wife Trisha Moni.
“Four days back, Musa visited the shelter home from where we found 19 grenades, three suicide vests and Tk12 lakh in burnt notes,” he said.
“We are suspecting their plan was to carry out massive violence on Christmas.”
Regarding Musa's role, Monirul said, by interrogating Musa's wife Trisha and killed militant Maj Zahid's wife Jebunnahr Shila, police had come to know that after the death of top leaders of the group, Musa had become the operational chief.
“We are trying to learn about their operational strength, funding and arms sources from Trisha and Shila,” he said.
“We got some clues which are now being scrutinised but we will know everything clearly once Musa is arrested.”