A male leopard was found in the modern electronic cage placed at the air base last night while a female one was trapped in it on Friday night, said J V Bhaskar, Divisional Forest Officer, Jaldapara.
The animals were released at the Jaldapara National Park.
These modern electronic cages were manufactured in such a way that the trapped animal will not get hurt while trying hard to break free, which was not the case in traditional iron cages, Bhaskar said.