The incident happened near Kanchuru on National Highway 59, about 20 kilometer from here, under the jurisdiction of Hinjili police station.
The two were on their way to attend a feast at Hinjili, said the inspector-in-charge of Hinjili police station, Prasant Kumar Sahoo.
The deceased were identified as 29-year-old Siba Shankar Das and his mother 60-year-old Chandrama Das of Kanchuru.
The bodies were recovered from the spot and sent for post-mortem examination at MKCG Medical College here, he said.
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