[3] His subsequent public service included chairing a local cooperative bank and sponsoring educational initiatives.
[7][8] From mid-1994, clashes between the BNP backed Jatioabadi Chhatra Dal and Awami League backed Bangladesh Chhatra League led to increasing violence in the form of bomb and arson attacks on party bureaus, newspaper offices and government buildings.
[6] In the midst of violence, the opposition led by the Awami League's Sheikh Hasina, pledged to boycott national elections scheduled for 15 February 1996.
When Khaleda Zia's BNP was re-elected for the second term in that election, it was boycotted and denounced by the three main opposition parties.
[6] On 26 March, in the face of increasing opposition, the newly elected parliament enacted the thirteenth constitutional amendment bill paving the way for the appointment of an interim caretaker government.
[6] On 28 March 1996, Biswas signed the Caretaker Government bill into law, which was welcomed by human rights organisations.
[6] As a result, Biswas dissolved the newly elected legislature and, as Khaleda Zia stepped down, while appointed former Chief Justice Habibur Rahman was appointed as chief adviser to head an interim government that was poised to preside over fresh national elections on 12 June 1996.
[6] On 19 May 1996, Biswas, as head of a caretaker government, ordered the army chief Lieutenant General Abu Saleh Mohammad Nasim to force the retirement of Major-General Morshed Khan, commander of Bogra Cantonment, and Brigadier Miron Hamidur Rahman, deputy chief of paramilitary Bangladesh Rifles.
On noon that day, Nasim ordered soldiers of Bogra, Jessore and Mymensingh divisions to march towards Dhaka.
He mobilised a fully geared 101 Infantry Brigade, under the command of Brigadier Shah Ikram (later Major General) to Dhaka to fortify Bangabhaban, the presidential palace.
[2] Biswas was married to Hosne Ara Rahman (1934 – 17 June 2017)[15] a cousin of politician Rashed Khan Menon.