The BNP-led 20-party alliance has threatened to enforce a nationwide hartal and tougher programmes from Sunday, condemning the killing of opposition members in the name of crossfire and protesting the mass arrests.
BNP Joint Secretary General Salahuddin Ahmed gave the warning through a press release on Thursday afternoon.
He said hartals and other tougher programmes would be staged alongside the ongoing indefinite nationwide transport blockade.
On behalf of Party Chairperson Khaleda Zia, he also called upon party leaders and activists to observe the programmes peacefully.
Since February 1, the country has witnessed nationwide strikes on top of the transport blockade, except on Friday and Saturday.
The BNP-led 20-party alliance has been enforcing a non-stop nationwide blockade since January 5, in protest against the confinement of party chief Khaleda Zia.
Khaleda Zia had been kept confined to her Gulshan party office since January 3 ahead of a party rally, marking Democracy Killing Day.
On January 12, the security was relaxed.
But Khaleda never came out; instead she said in a press conference that she was going to stay there and the blockade would continue unless the government took the first steps towards a solution.
For most of the day, the blockade and hartal enforced by the BNP-led 20-party alliance had little impact on the lives of the people on its 60th day, aside from a few stray incidents of violence across the country.
So far, more than 80 people have died and scores have been injured in different parts of the country during the non-stop blockade.
Law enforcers continued a crackdown on alleged anarchists and pickets throughout the country.