A person died while he was repairing a defunct ropeway at Millennium Science Park at North 24 Parganas Madhyamgram on Sunday morning.
Police said body of Shibu Shaw, a middle-aged person was hanging from the rope and metal structure for three and half hours.
The victim had been hanging from the structure at a height of 100 foot from the ground.
The fire brigade officers used a ladder to rescue the person. He was taken to a hospital, but was declared brought dead there.
Police said that Shaw, a resident of Odisha, climbed up to repair the ropeway along with his two associates.
Two men managed to came down from there, but Shaw was stuck there. He probably succumbed due to a heart failure. Ashoknagar police station started a probe.
"We will examine the necessary permission of the park. We have to inspect the infrastructure here," said an officer.
Police also interrogated some of the employees in the park.There are several examples of accidents in amusement parks. It should be recalled that three students, two of them studying in the UK, were killed a few months ago at Mandarmani after a head-on collision between two cars at the beach.
Police found the revellers often treat the beach like a racing track, and drove the car in highest sped. Shivraj Naskar, Suraj Dasgupta and Vaibhav Shandilya, all of them 21 and former students of Calcutta International School, had apparently driven all night to reach Mandarmani before the incident happened.
It will also be recalled that a youth was killed when he attempted a para-gliding at the beach in 2015.
Tarun Ghosh was on a holiday tour at Mandarmani, with his family when an unfortunate incident occurred.
Ghosh, an adventure enthusiast, in an attempt to make his trip memorable, enrolled his name for parasailing with a company.
As soon as the parachute went into the air, it came too close to an electric pillar due to the heavy tides.
The parachute further went off track due to heavy rains and wind.