The couple was accompanied by their six-year-old daughter Aaradhya besides Aishwarya's mother Vrindya Rai and brother Aditya Rai.
Upon their arrival at the Sangam, the group was received by some policemen and priests, who escorted them on to a boat.
After reaching midstream, the ashes of Aiswarya's father Krishnaraj Rai, who passed away in March this year, were immersed amid chants of hymns.
"It was a personal visit by the Bachchans who had requested for privacy and hence only bare minimum deployment of police personnel was made. They left immediately after performing the rites at the Sangam," District Magistrate Sanjay Kumar said.
The Bachchans have their roots in the city where Teji got married to renowned Hindi poet Harivansh Rai Bachchan and Amitabh spent his early childhood before the family moved to Delhi in the 1950s.
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