The decision was taken at a meeting of the alliance held at BNP Chairperson’s Gulshan office.
BNP standing committee member Nazrul Islam Khan announced the programme after the meeting.
He said they will later decide about the venue of the meeting.
Besides, Nazrul said, the 20-party extended its support to BNP’s public gathering programmes in cities and district towns for Saturday and Sunday demanding the cancellation of ‘anti-state’ deals with India and protesting the killing of Abrar.
He said their meeting strongly condemned and protested the ‘anti-state’ bilateral documents signed with India during the Prime Minister’s recent visit.
Nazrul said the alliance also demanded the government cancel the recent deals with the neighbouring country in the interests of Bangladesh and its people.
He said their meeting also denounced the killing of Abrar and demanded the government ensure exemplary punishment to all the offenders involved with the incident.