Bangladesh police have stormed a hideout outside capital, Dhaka, shooting dead three people, including the main suspect in the last month's cafe attack that killed 22 hostages.

"We can see three dead bodies here," senior police officer Sanwar Hossain told AFP news agency on Saturday, adding that the dead "most probably" included Bangladeshi-Canadian citizen Tamim Chowdhury.

A team of Counter Terrorism and Transnational Crime unit and police cordoned off the house in Narayanganj Sadar upazila this morning on information that a gang of militants were staying there, Mainul Haq, superintendent of Narayanganj police, told The Daily Star newspaper.

As the police forces tried to enter the house, the criminals opened fire from inside, the Haq said.

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