His call came on Sunday at a programme in East London as the party headquarters in Dhaka’s Naya Paltan and his mother Chairperson Khaleda Zia's Gulshan office were locked up.

Police ramped up security around her Gulshan office since Saturday night for what they called her 'protection' and barred her from leaving.

Tarique told the BNP supporters, “The movement’s goal is to oust Hasina, reclaim democracy and hold election under a nonpartisan government. Take the lead in the movement.”

“Take the people along and start massive agitations in every area so that anti-democratic forces don’t stand a chance.”

Tarique continued, “Isolate one area from the other areas in Dhaka the same way it was isolated from other parts of Bangladesh ahead of the Jan 5 polls (last year). So that no one from a specific region can go and repress the agitating people.”

He also told the BNP supporters to cut off their own areas in the district, Upazila and Union levels.

“No one should return home until the movement is successful. Agitators will only return home when Sheikh Hasina leaves,” said Khaleda’s eldest son, who has been living in London for the last seven years.

“There is no room for confusion. Leave the streets only after you get the news that Sheikh Hasina has resigned. Not before that.”

The BNP along with its allies had opted out of last year’s general election and announced to mark Jan 5 as the ‘Murder of Democracy Day’ with nationwide rallies and black-flag marches.

But police prohibited all forms of political rallies and gatherings in Dhaka starting from Sunday afternoon after the Awami League-led 14-Party alliance turned up the heat a notch by declaring to resist the opposition.

Police also locked up the BNP headquarters and have virtually besieged Khaleda in her office since Saturday night.

The law enforcers tightened security around her office for what they called her 'protection' and barred her from leaving.

After failing to get out of her office amid heavy police presence, Khaleda on Monday afternoon announced an indefinite blockade of highway, railways and waterways across Bangladesh.

A day earlier, Tarique in London said their movement was spreading and it was getting unstoppable.

He said the movement was a must to save "the people, the country and democracy".

“The Awami League has no popular support. They have only RAB and police. They are not brave enough to come out in the streets with RAB and police.

"They won’t be able to do anything without RAB and police.”