A 40-year-old man was critically injured on Friday when a lion attacked him inside the enclosure in Kolkataโ€™s Alipore Zoo.

The lion attacked the man when he entered the animalโ€™s enclosure, leaving him seriously injured.

The man was rushed to SSKM Hospital where he is undergoing treatment but his condition is โ€œcriticalโ€, hospital sources said.

The incident happened this morning at around 11.30 am when the man after entering the zoo โ€œsomehow managed to climb the boundary wall before jumping over the two netted-boundaries to get inside the enclosure.

The lion, which was out of its cage, attacked the man. He has been very badly injured,โ€ an official said.

Alerted by the other visitors, security guards rescued the man and sent him to the SSKM Hospital after informing local police, the official added.

โ€œWe are checking the CCTV footage to get a clear picture of the incident. We are trying to find out his identity,โ€ a policeman said.