Leaders and activists of Bangladesh Nationalist Party (BNP) gathered in front of the party's Nayapaltan office on Wednesday to make success their pre-scheduled four hours--from 10am to 2pm--mass sit-in programme.
Centring the programme police are on high alert to avert any kind of chaos.
The party supporters and activists have started gathering at the venue since 9am chanting slogans.
A large number of police personnel were seen deployed near Nightangle and Fakirapool intersections with armoured vehicles and water cannons. Vehicular movement on the road remained suspended as the BNP men blocked the road.
Meanwhile, the ruling Awami League will also bring out processions and showdowns taking position in different city areas.
On Tuesday night, Dhaka Metropolitan Police (DMP) gave permission to BNP for holding its mass sit-in programme.