Another upazila in Comilla has been submerged by floodwaters.
The embankment of the Gumti River broke, causing most of the villages in Brahmanpara upazila to be submerged.
The water began to rise on Saturday afternoon and the upazila residents' homes were completely submerged by evening.
Local sources reported that on Thursday night, the embankment of the Gumti River at Burichong Upazila's Burburia area broke, allowing water to enter the local area.
Burichong upazila was flooded that very night, leading to a flash flood across the upazila.
On Saturday, that water flowed into the neighboring Brahmanpara upazila.
Additionally, the embankment of the Ghungur River in Brahmanpara broke in the morning, causing water to flood the upazila.
So far, 23 villages in four unions of Brahmanpara upazila have been submerged.
Reports said that water has entered homes in Malapara, Sahebabad, Shashidal, Naighar, Noapara, Kalpabas, Dhanyadaul, Dograpara, Brahmanpara Sadar, Nagais, Baradushia, and Chandlar villages.
According to the upazila administration, around 7,500 people have taken refuge in shelters.
All schools and colleges in the upazila have been declared closed.
About 40,000 people were trapped in water since the evening. These people have left their homes and moved to higher ground rather than going to shelters.
Brahmanpara Upazila Nirbahi Officer (UNO) SM Azharul Islam said: "Everything was fine until morning. In the afternoon, we received reports that water was entering different areas. By evening, more than 23 villages were flooded due to the sudden rush of water. Through the Upazila Education Office, we coordinated and declared the closure of educational institutions. We are carrying out rescue operations with volunteers. Additionally, we brought drums from Dhaka to make rafts for rescue operations. We are coordinating with local volunteers, the administration, and relevant authorities. Dry food has been arranged for those who have taken refuge in shelters. Alternative arrangements are being made for those who are trapped in water."