Mohammed Hasim Ali Naskar, 13, Rafiqul Naskar, 25 and Mohammed Aman, 12, lifted wooden structures of immersed Durga idols from river water when they drifted away due to a high tide.
The wooden structure acts as base on which the clay idol of the goddess is erected. The structures are lifted from water after immersion and reused.
The three were rescued by joint teams of Kolkata Police Disaster Management Group (DMG) and local police stations.
After receiving the information that the three were drifted away by strong upstream current, "we alerted all upstream ghats and a search was launched by River Traffic Police and the DMG," an officer said.
After a three-hour long search, they were found floating clinging to a wooden structure near Kashi Mitra Ghat under the North Port Police Station.
"They could have drowned. But they managed to cling to the wooden structure and that saved them. We thank the local people in lending hands in saving them," he said.