China's reported anti-satellite ballistic missile test is a matter of concern and India will take necessary steps after making an assessment, a top defence official said on Saturday.

M Natarajan, the scientific advisor to the defence minister and chief of the Defence Research and Development Organisation, said it was a matter of concern if such missiles could "disable" satellites, particularly those with GPS, navigation and military applications.

Reports from New York on Friday had said US spy agencies had claimed that China had successfully "killed" an aging satellite by using a ground-based ballistic missile. Beijing has declined to confirm the test.

Natarajan told reporters in response to questions that details of the reported test were not available. "We are looking into it. We will make our own assessment (to see) what steps we need to initiate in this direction," he said.

He said India recently conducted a successful test in which a missile intercepted a simulated "enemy" missile at an altitude of close to 50 km.