Prime Minister Narendra Modi on Saturday targeted the Congress attitude towards national security on account of which the Bharatiya Janata Party (BJP) is hoping to return to power at the centre in the ongoing parliamentary polls.

Addressing two rallies in Karnataka and one in Tamil Nadu, Modi continued the party's strategy of seeking support based on the decision to carry out cross border air and surgical strike.

"During Congress' time attacks would take place all the time and they would change the Home Minister after the incident. They would blame only person and sit quiet. But Modi does not change the Home Minister, he changes the approach," he said in Bengaluru.

He added that the Congress couldn't digest the fact that the centre took the decision to carry out cross border strikes.

He said that India's bold decision to carry out the strikes saw the international community stand firmly behind the country leaving only China with Pakistan.

The two parties sparing no opportunity to highlight the flaws of the other in the hope of forming the next government at the centre.

The BJP is largely relying on the national security to drum up support while the Congress is hoping that the failures of the incumbent and populist schemes like NYAY will give them another chance after it was reduced to double digits in 2014.

In Karnataka, the Congress has teamed up with the Janata Dal (Secular) to bring down the tally of the BJP in the 28 parliamentary seats in the state.

However, problems between the coalition partners has handed some of the advantage to the BJP.

Congress president Rahul Gandhi, who was also in Karnataka on Saturday, had alleged that Modi had stolen from the armed forces and the poor and give it to his industrialist friends.

Modi egging the crowd to ensure that Congress candidates lose their deposits in the polls. The JD(S)-Congress coalition has been accusing the centre of using central government agencies to target political rivals. Modi hit back saying that those who have nothing to hide shouldn't be afraid.

Modi said that he was himself grilled for hours when he was Gujarat CM but he did not have a problem as he had nothing wrong.

The Opposition have accused the Modi government of using the income tax department to intimidate them. Karnataka chief minister H.D. Kumaraswamy even naming top I-T officials as conduits in the centre's scheme to silence Opposition members.

The CM even holding protests against the department.