"There were media reports that companies had the permission to mine beach sand, which contains monazite, were also exporting it. These had the license to procure granite, another mineral found in monazite ore. Authorities are investigating the case," said Union Minister Jitendra Singh, who also holds charge of Department of Atomic Energy.
He, however, did not elaborate on further details of the theft.
Singh added that he was in talks with the Department of Space and Ministry of Earth Science on how one could use technology for the stopping the theft.
Thorium is very crucial for India as India envisages a three-stage nuclear porgramme and the mineral will act as fuel.