Indian police have filed preliminary charges against senior Twitter officials over an inaccurate map of the country, an official said yesterday, in the latest escalation between the US firm and New Delhi. Uttar Pradesh state police said the criminal case was filed against two Twitter India officials late Monday following a complaint from the local head of a Hindu nationalist group that the US firm's website showed the disputed Kashmir region as an independent country. Twitter has been locked for several months in an acrimonious row with New Delhi over new rules for social media companies operating in India. The regulations require firms to remove and identify the "first originator" of posts deemed to undermine India's sovereignty, state security or public order.