AICC secretary Sanjay Dutt dubbed the alliance firmed up by the AIADMK, BJP and PMK for the Lok Sabha polls as unprincipled and not based on any ideology.
Dutt said the PMK had been continuously flaying the AIADMK government in Tamil Nadu in recent months and had also hit out at the BJP and NDA government at the Centre, he said.
"How can there be a 360 degree U Turn on the part of the PMKnow to have an alliance with the AIADMK and BJP.
It should be either under threat of investigating agencies or out of fear psychosis that the alliance had been clinched by the PMK and AIADMK with BJP," Dutt, also incharge of party affairs in Puducherry, said.
Describing the tie-up as "unpricipled," he said it was not based on any ideology.
He was talking to reporters after chairing a joint meeting of the functionaries of the Campaign and Publicity committees of the PCC formed in the context of the coming Lok Sabha polls.
Dutt said when congress president Rahul Gandhi had taken the initiative for an alliance with secular and democratic parties, the Prime Minister had described it as "highly adulterated."