"Antony should tell at whose behest changes were made in the agreement. Why were the field trials of the helicopter shifted abroad," Shah said, launching his campaign for the May 16 assembly elections in Antony's home state of Kerala.
Addressing a public meeting at Ranni in Pathanamthitta District, he slammed Antony for his statement that BJP had a "secret tie-up" with CPI(M) in the state and dismissed the allegation.
On their claim that there would be communal tension in Kerala if BJP-led NDA came to power, Shah said his party was ruling in 14 states and there was no communal strife in any of them.
"Prime Minister Narendra Modi has repeatedly said equal justice and protection to all is our motto. This is what BJP governments follow in all the states," he said.
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Shah said NDA should come to power in the state to speed up the declaration of the famous hill shrine of Lord Ayyappa at Sabarimala near here as a national pilgrim centre and also for setting up the proposed rubber park in the district.
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Addressing a rally in Manimala in Kottayam district, Shah said the fight between the ruling UDF and LDF was not based on ideology.
"If it was so, they would not be fighting each other in Kerala and get into a poll alliance in West Bengal. UDF or LDF, Congress or Communists are not here for ideology in politics," he said.
Referring to the brutal rape and murder of the Dalit law student in Perumbavoor, Shah accused that it was a clear proof of "collapse" of law and order situation in Kerala.
Shah reiterated about the controversial chopper deal and said 'tainted image' of the previous Congress-led UPA government would "become more clear with more revelations on the deal in the coming days.