From 13 to 19 October 2021, Muslim mobs instigated communal violence against Hindu communities across Bangladesh during the Durga Puja festival, in response to a viral video where Quran was kept under a temple idol's feet.

A few days later, a Muslim man named Iqbal Hossain was arrested by police for placing the copy of the Quran on the lap of the idol at Nanua Dighir Par puja mandap in Comilla on 13 October.

[4] Reports of attacks on temples, houses, shops of minorities, looting of belongings, and murder were documented in at least a dozen districts of Bangladesh mostly in the southern area, including Comilla, Chandpur, Noakhali, Chittagong, Bandarban, Cox's Bazar, Narshingdi and Gazipur.

Durga puja venue of Nanua Dighir Par and Chandmoni Kali temple became the target for the attackers soon after the rumor of demeaning Quran spread across the area.

[1] At least 4 people died in Chandpur when Police fired at an angry mob brought out a procession, and launched an attack on some Durga puja venue of the district, on 13 October.

[7] Under the leadership of a local Awami League leader, a temple and establishments owned by Hindus were attacked by an angry mob on 14 October in Lama area of Bandarban.

Lama Upazila Awami League general secretary Zahirul Islam addressed the mob before they started attacking the temple according to the local police officials.

[8] The body of a Hindu man was recovered from a pond adjacent to the temple on Saturday after an attack on Begumganj's Chaumuhani in Noakhali, Bangladesh, on Friday.

[10] Police said a puja mandapa in Begumganj in Noakhali district was attacked and set on fire and idols were vandalized inside another temple on Friday.

Ashish Bhattacharya, president of the Chittagong Metropolitan Worship Celebration Council, told reporters, 'Every year the work of immersion starts from 11 am.

[15] A group of zealots from a procession brought out in the Andarkilla area started throwing brickbats targeting the J M Sen Hall Puja Mandap.

Witnesses said as the group threw brickbats at the temple housing the mandap and tried to vandalize it, police chased them away leading to a clash between the law enforcers and the zealots.

Police fired shots in the air and lobbed tear gas canisters to disperse the attackers, who had brought out the procession after Jum'ah prayer.

[16] On Wednesday (13 October) evening, a group of extremist miscreants along with a procession attacked and vandalized the puja mandapa of Biswas Para in Sadar Union of Pekua Upazila with provocative slogans.

[17] Kamalganj Upazila Parishad Vice Chairman Rambhajan Kairi confirmed the vandalism of the idol at Kamarchhara Tea Garden Pujamandap.

[19] A group of mob set fire to around a dozen Hindu-owned houses in Rangpur's Pirganj Upazila on 17 October after an alleged post by a local Hindu boy on Kaaba went viral.

[21] It was later revealed that, Saikat Mandal, the vice-president of philosophy department Chhatra League at Rangpur's Carmichael College, had a personal conflict with a local Hindu youth Paritosh Sarkar.

In addition, the High Court bench, led by Judge JBM Hasan, was ordered to dispose of a petition related to attacks on communities in six districts.

Subrata Chowdhury, counsel for the writ petitioner, objected to the stay order, saying, "The local administration has failed to protect Hindus and their properties and places of worship from communal attacks during last year's Durga Puja.

"[23][24] On 16 October 2021, after Friday prayers, a crowd of over 10,000 Muslims from various Mosques in Dhaka took to streets, carrying banners of Islamist political parties and chanting, "down with the enemies of the Islam" and "hang the culprits".

[4][25][26] Minister of Home Affairs Asaduzzaman Khan stated that the incidents were pre-planned: "It appears to us that it was a motivated act instigated by a vested group ... Not only in Comilla, but attempts were also made to destabilize the country previously through communal violence in Ramu and Nasirnagar.

[27] Mirza Fakhrul Islam Alamgir, secretary general of Bangladesh Nationalist Party condemned the violence against "Hindu brothers", and alleged a government conspiracy behind the attacks.

[29] The General Secretary of the organization in an interview claimed that a majority of local Awami League leaders were complicit or actively aiding in the violence.