Black Death or Bubonic Plague, officially declared as wiped out nearly 30 years ago by the Indian government, still poses a real threat to the country and to Bombay (Mumbai) in particular.

The sprawling metropolis plays host to tens of millions of rats, which carry the disease via their fleas and hence pose a danger to the city's population.

In a unique way of combating the problem, the city has set up a troop of Night Rat Killers (NRK) to clear Bombay's streets of these diseased vermin.