The students, all in their twenties, seem to have been swept away by the strong currents of the river when their raft turned turtle at around 4 pm about 22 kms from Muni Ki Reti police station off the beach, the SHO said adding, they were BTech students from Haryana's Kurukshetra University.
None of the bodies has been recovered so far despite four hours of rescue operations, which had to be suspended due to darkness, he said.
Rescue operations will be resumed tomorrow morning, he said.
They had hired a raft from Bhagwan Singh rafting camp at Neem beach along the banks of River Ganga.