in early 2009 allegedly due to poaching, the state forest department had translocated four tigresses and a tiger to Panna from different tiger reserves in an attempt to revive their population. The translocation plan has seen success with increasing number of cubs. Now 12 cubs, including two young ones are in the reserve.
http://articles.timesofindia.indiatimes.com/2012-04-18/bhopal/31360641_1_tiger-cub-big-cat-population-translocated