Threatening text messages sent in bulk - inexpensive in India - were the main vehicle of the insidious rumours that have swirled around in the city for the past two days, driving panic into the hearts of the tens of thousands of people from the north-eastern region living there.
The main economic justification for rail subsidies is to ease congestion or pollution, yet the bulk of the rail subsidy goes to areas such as the Highlands where these are not much of a problem.