Nitish Kumar who is known for his interest in archaeology, noticed the spot on Friday when he was on his 'Vikas Samiksha Yatra'.
A mound spotted by Bihar Chief Minister Nitish Kumar at a village in Sheikhpura district has yielded potsherds, perhaps dating back to 1000 BC.
Potsherds are pieces of broken ceramic pot or other earthenware that have archaeological significance.
"We visited the site yesterday (Saturday) and were thrilled to discover a number of potsherds which give a hint about the antiquity of the mound," Executive Director of the KP Jayaswal Research Institute, Bijoy Kumar Chaudhary, said on Sunday.
The state-run institute, located in the Patna Museum building, researches in the field of history and archaeology.
"Black slip wares and black and red wares found at the site appear to be of a period around 1000 BC. We also found some red furnished ware that could date back to the Neolithic period," Chaudhary told PTI.
A team of archaeologists conducted preliminary explorations at Pharpar village in Ariyari block after getting a call from Chief Secretary Anjani Kumar Singh.
The chief secretary, who was accompanying the chief minister during his visit to the village on Friday, telephoned Chaudhary after Kumar noticed the mound and observed that it looked like a site of historical and archaeological importance, he said.
The village is about 120 kilometres from the state capital.