"The tigress was spotted with her four new born cubs by ground duty staffers yesterday," Reserve Field Director Alok Kumar told PTI.
With this litter, the feline has begotten 22 cubs since 2008, he said.
Kumar said the cubs appeared to be 45 days old but their exact age was not known since the feline gave birth to them in a cave.
He said this was the sixth litter of the tigress, adding that earlier, she had given birth to 18 cubs between 2008 and 2013.