The three deceased were reportedly identified as Tuku Hemrom (12), Kulin Hemrom (17), and Pulin Hemrom (22).
Tuk’s body has not yet been rescued, but two have been recovered.
In this regard, authorities have launched a search with the help of police and local residents in the area.
In March of this year, three teenagers who drowned in a stream in Ambasa, northern Tripura, died in a similar incident.
Police officials said three children took a bath in Chara after celebrating the Holi Festival and then became unconscious.
The children were immediately taken to a government hospital, where doctors declared they dead.