Tahawwur Hussain Rana, a key accused in the 26/11 Mumbai terror attacks, was formally arrested by the National Investigation Agency (NIA) on Thursday after his extradition from the United States. A Mumbai police official involved in the investigation revealed that Rana had assisted co-conspirator David Coleman Headley in securing an Indian visa used to conduct reconnaissance ahead of the deadly 2008 attacks. Rana, a former medical corps officer in the Pakistan Army who later moved to Canada and the US, used his immigration consultancy business as a front to facilitate Headley’s travel and activities in India. According to investigators, Rana’s firm in Chicago provided cover for Headley’s reconnaissance missions, and he played a key role in getting Headley a ten-year Indian visa extension.