New Delhi, Aug 31 - India has noted a US media report suggesting Pakistan had modified US Harpoon anti-ship missiles to hit possible targets in this country and is examining its impact on national security, a senior official said here Monday.

'We have seen the report and studied its contents. The government of India is closely monitoring all the developments having a bearing on national security,' the official said.

'We will take necessary steps,' the official added.

The US has accused Pakistan of illegally modifying Harpoon missiles and the P-3C maritime surveillance aircraft for potential use against India, a report in the New York Times said quoting unnamed US officials.

The Obama Administration, said the report, lodged its protest on this with Pakistan Prime Minister Yousuf Raza Gilani in June, adding to the tension between the two countries.