Our Habiganj correspondent said four children, including two siblings, drowned in separate incidents.
The deceased were Rukon Mian, 8, son of Moulad Mian of Balgakhal village, Tania Akter, 12, daughter of Babul Mian of Shaesthanagar area in Sadar upazila and Marufa Begum, 2, and Maria Begum, 2, daughters of Bilar Mian of Slamat village.
According to local sources, Rukon was playing near the pond adjacent to their house in the afternoon. At one stage, he fell into the pond. Later, locals found the floating body and recovered it. He was sent to Sadar Hospital where on duty doctors declared him dead. He was a student of local primary school.
On the other hand, Tania drowned while she was having birth in the pond nearby the school adjacent to their house.
Marufa and Maria, two siblings drowned while they were playing near the pond adjacent to their house.
Locals found the floating bodies in the pond and recovered those. Later those were sent to Sadar hospital where doctor declared them dead.
In Jhalokati, three children drowned in Rajapur area in the district, reports our correspondent.
According to local sources, 18-month old Sufia Akter of Kathipara village and one-year old Tahira Akter of Boroia village drowned while they were playing nearby the pond.
On the other hand Yasin, 1, son of Lokman Hossain of Angaria village died after he drowned in the pond near the house.
Locals rescued them and those to local hospital where the doctors declared them dead.
In Narayanganj, three children drowned the Brahmaputra River in Sonargaon upazila in the afternoon, reports our correspondent.
The deceased were Sabikun Nahar, 8, dauhter of Jalaluddin of Doulardi village, Mithila Akter, 7, daughter of Abdul Hai and Nirab Hossen, 7, son of Mojammel Hossen of Kumarchar Govt Primary School.
Locals said the three students went to play near the field of the Brahmaputra River. At one stage Mithila fell into river. The two others went to rescue her and drowned in the river.
Later, the local people recovered the floating bodies from the river.
Sonargaon police station Officer-in-Charge Manjur Kader confirmed the incident.
In Rajshahi city, two children drowned while playing near a pond in Horgram area.
Kamaruzzaman Kamru, councillor of ward 5 under Rajshahi City Corporation, told the Dhaka Tribune that Kuraish, 4, son of Abu Sayeed and Boishakhi, 4, daughter of Jahurul, fell down in a pond while they were playing near the water body around 2pm.
Locals people recovered them in a critical state and took them to Rajshahi Medical College Hospital where on duty doctor declared him dead.