Amid the logjam over Koodankulam nuclear power project, a senior anti-KNPP functionary on Monday threatened to file a criminal defamation case against MoS in the Prime Minister's Office V Narayanasamy for allegedly charging him with receiving money from foreign sources.

S P Udhayakumar, convener of the People's Movement against Nuclear Energy, spearheading the stir against the project, alleged that Narayanasamy was going on making statements that he had got money to the tune of Rs 1.5 crore from foreign sources and some people were believing such allegations and he wanted to bring it to an end.

"I did not take that seriously initially, since that was not true.....I request the Minister on what date, where and whom, when and how through which bank account did I get money?," Udhayakumar told PTI over phone.

He said he would file the complaint "in a couple of days."

Udhayakumar also said that he was going to write to Chief Minister Jayalalithaa insisting that the state government expert panel visit all the villages around Koodankulam to come to a conclusion.

Jayalalithaa had made an announcemenet in the state Assembly on Saturday about setting up of an expert panel to look into "fears and concerns" of the local people.

"I am going to write to her asking the expert panel to visit all villages in the area. They should not be like the Centre-constituted panel which did not meet people," he said.