The boy sat frightened inside the moat for about 10 minutes before the wild cat attacked him.
Many claim that there weren't many security guards or zoo personnel in the vicinity who could come to the rescue of the boy.
But this is not the first time the wild cats in the zoo have attacked humans.
Here are some incidents from the past
October 2012: A 42-year-old man was seriously injured by a lioness as he dodged security and jumped into the wild cat's enclosure at Bhubaneshwar's Nandankanan zoo.
October 2012: A tiger bites of a 2 and half year old boys arm as the boy tried to feed chocolate to the big cat through an iron grill.
July 2012: A 32-year-old man was mauled and seriously injured by a tiger after he sneaked into its enclosure at the Tata Steel Zoological Park in Jamshedpur, Jharkhand.
August 2009: An inebriated visitor to the Nehru Zoological Park in Hyderabad tried to feed grass to a white tiger, and ended up at the Osmania General Hospital with a severely mauled arm.
December 2007: Two tigers at the Guwahati Zoo mauled a visitor who put his hand into the enclosure to get a close-up photograph. The man lost his left arm and died later.
December 2000: A tiger killed a young man who ventured into the open-air enclosure by scaling the high wall surrounding it at the Alipore Zoo of Kolkata.
January 1996: Two drunk men tried to garland a tiger after entering inside the enclosure at the Alipore Zoo of Kolkata. The animal killed one of them and injured the other.
March 1988: A 3-year-old boy Nitin Walia's hand was ripped of by a white tiger. The boy put his right hand into the cage and the tiger attacked and ripped it off. The arm was later amputated.