On 1 August 2004 at 11.00 a.m., a group of Muslim Bengali settlers from the College Gate area of Rangamati municipality committed a violent communal attack on indigenous people in the College Gate, TTC, Kalyanpur and Bhedbhedi areas.

A quarrel between an indigenous student Mr. Tutul Chakma and a Muslim Bengali student of Rangamati Government College over smoking in the college was the reason that set the background of the attack.
Muslim Bengali settlers attacked the indigenous student with a knife resulting in serious injuries his body.
After sometime of this violence, Muslim Bengali settlers aired an unsubstantiated rumor that the indigenous people were attacking the villages of Bengali Muslim settlers and started attacking indigenous people on roads with iron rod and stick indiscriminately in the College Gate, TTC, Kalyanpur and Bhedbhedi areas. In this attack, over 10 indigenous people were wounded, of them Mr. Mintu Dewan (18) s/o Sunil Kanti Dewan seriously.

Later indigenous youths tried to resist the attack resulting in a communal clash between the indigenous people and Muslim Bengali settlers. In this clash, an auto rickshaw driver was seriously wounded. He was sent to the Chittagong Medical College hospital.
Police and army were deployed to “control” the situation.
Communal tension was looming large in Rangamati.