Of the eight, the NIA had already arrested two leaders Balai Charan Maiti, Trinamool Congress area president and ruling party Boot president Monobrata Jana.

Three others, East Midnapore district public works executive officer, Manab Kumar Parua and his two associates Subir Maiti and Nobo Kumar Pand have also been issued notices by the NIA and asked to appear at the central agency office on Monday.

Sources said the three other local Trinamool Congress leaders are Utta Maiti, Milan Barman and Shiboprasad Gayen and all of them are considered active grassroots leaders of the ruling party in the area.

Sources said that since the NIA took over the investigation in June 2023 following an order of the Calcutta High Court, they have issued summons to each of these eight local ruling party leaders for questioning, while all the Has been ignored.

On Saturday, the NIA conducted a raid and search operation in Naruabila village of Bhupatinagar area and arrested Balai Charan Maiti and Monobrata Jana.

While returning to arrest them, the NIA faced an attack by a group of villagers, in which one of their officers suffered minor injuries.

“They are deliberately targeting our main booth agents in the area. If our boot agents are arrested, we will field their family members as booth agents,” West Bengal Chief Minister Mamata Banerjee said.