Police said that Harish Parmar (38) had left his rented house at Gorwa locality in Vadodara along with his only son, 13-year-old Samarth, on Monday evening.
An official said that Parmar appeared to have committed suicide by jumping into the river, along with his teenage son, from a bridge above.
The family belonged to Karodiya village on the outskirts of Vadodara, but were living in Gorwa locality where Parmar ran a tuition class, the official added.
The official said the cause of the deaths was being investigated.
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