An investigation by environment body Greenpeace has revealed immediate radiation risk to people at a scrapyard in west Delhi’s Mayapuri area where a person died after exposure to radiation last month.

“The investigation has identified hotspots more than 5,000 times natural background radiation,” an expert said after a Greenpeace team visited Mayapuri on Friday morning.

The government had earlier given a clean chit to the scrap yard.

Greenpeace has shared the information with local residents and the concerned authorities.

Police had said the source of the leak last month was a radioactive gamma cell containing Cobalt 60 that was auctioned as scrap by Delhi University’s chemistry department two months ago.