[2][3] Chowdhury maintained regular contact with Tarique Rahman while at Directorate General of Forces Intelligence.

[5] He met with Paresh Baruah of the United Liberation Front of Asom to discuss smuggling arms for Indian separatist outfit.

[6] He also served as the directors general of the National Security Intelligence from 20 April 2008 to 17 March 2009.

[9] He held meetings with officials of ARY Group and the Pakistan intelligence agency ISI regarding the smuggling of arms.

[12][13][14] Chowdhury was sentenced to death in the 2004 Dhaka grenade attack which was an attempted assassination of Sheikh Hasina, former Prime Minister of Bangladesh and leader of Awami League.