India, Jan. 24 -- A 45-year-old woman from Assam has been arrested for allegedly using forged embassy number plates on a car she bought at an embassy auction to access diplomatic areas in Delhi, police said, adding she was being considered a threat to national security with this coming days ahead of Republic Day.

The woman was arrested on January 15 from outside a friend's house in Vasant Vihar based on a tip. "The car [she was driving] bore a fake foreign embassy registration number. We also recovered one more forged diplomatic number plate," said deputy commissioner of police (crime branch) Sanjeev Kumar Yadav.

She had been on police radar after they were tipped off that a woman had been frequenting embassies in a car with forged plat...