What is plutonium pack and how is it connected to Uttarakhand glacier collapse?

Uttarakhand Irrigation Minister Satpal Maharaj said that all angles of the Uttarakhand glacier collapse should be investigated including the plutonium pack which was kept to monitor the movement of China. What is plutonium pack and what is its connection with Uttarakhand tragedy? Watch the report to know the details and updates from Chamoli.