Chennai, Aug 10 (IANS): The Central Industrial Security Force (CISF) has said that it has ordered an inquiry into an incident wherein one of its female security personnel posted at the Chennai airport had questioned DMK MP Kanimozhi whether she was an Indian.

In a tweet, the security force said: "The CISF has ordered an inquiry into the matter. It is not the policy of the CISF to insist upon any particular language."

On Sunday, Kanimozhi had tweeted: "Today, at the airport, a CISF officer asked me if 'I am an Indian' when I asked her to speak to me in Tamil or English as I did not know Hindi. I would like to know from when being an Indian is equal to knowing Hindi."

Political leaders in Tamil Nadu have been raising their voice against positing of north Indians at locations like railway station ticket counters where the local people have to interact with them.

The airport incident comes at a time when Kanimozhi's party is staunchly opposing the New Education Policy's three-language formula.

Kanimozhi thanked the CISF for immediate response and assurance to take action.