The man was identified as, Abdur Razzaq, 52, son of Zafar Uddin of Kansat under Shibgonj upazila in the district.
RAB sources said, Razzaq was kidnapped by unidentified persons from Kansat Bazar area on Saturday afternoon at around 3:00 pm. Later, the abductors demanded Tk. 2 lakh as ransom.
Victim's son Mohammad Salim filed a case with Shibganj police station and he also lodged a written complaint with RAB-5 headquarters at Rajshahi.
Abductors kept Razzak at Ranihati Bazar area. On secret information, Rab members went to Ranihati Bazar area and rescued Razzaq from the area at around 1:10 am. Sensing the presence the law enforcers' kidnappers managed to flee.