During the Bangladesh Liberation War the group aligned itself with Pakistan and China against Bangladeshi nationalists and the Soviet Union.

[9] [failed verification] The PBCP became involved in criminal activities in the 1990s in order to finance itself.

[8] In the 2000s the PBCP underwent several splits, the most important of which took place in 2003, forming the PBCP-J (Purbo Banglar Communist Party-Janajuddha, dedicated to socialist revolution) thus starting an internal conflict that has killed 18 people.

[11] In 2002, Gazi Kamrul, the founder of BCP, was detained from his residence during Operation Clean Heart on 23 August 2002.

[12] Since 2005 the PBCP has begun to extend its insurrection with terrorist attacks, clashing with the government and also with rival Islamist groups like the JMJB.