He was killed on November 27, 1990, allegedly by cadres supportive of the then military ruler Hussain Muhammad Ershad.

[4] Milon joined at Department of Physiology & Biochemistry in Dhaka Medical College as lecturer.

[6] At the height of 1990 Mass Uprising in Bangladesh, Milon was killed by gunmen of the then military dictator Hussain Muhammad Ershad near Teacher-Student Centre (TSC), University of Dhaka on November 27, 1990.

[7][8] On that day, Milon, accompanied by Mostofa Jalal Mohiuddin were heading for the then IPGMR to attend a meeting arranged by Bangladesh Medical Association by a rickshaw.

It prompted the dethroning of military ruler Hussain Muhammad Ershad on December 6, 1990, only a few days after Milon's assassination.