Foreign Ministry Spokesman Zahid Hafeez Chaudhri pointed out that the security of nuclear materials must be the top priority for all countries, the website of the TV channel Ary News reported.
Chaudhri underlined the need to launch an in-depth investigation into how such a considerable amount of uranium could be out of state control, and to identify the breaches that made it possible.
Uranium is a highly reactive element that can be dangerous to human life and it is used to make nuclear explosives, the source added.
The Anti-Terrorism Squad (ATS) in the Indian state of Maharashtra seized 7.1 kilograms of natural uranium and arrested two individuals for that reason, the website of The Wire reported.
The detainees were looking for a possible buyer to sell the radioactive substance, which was sent to the Bhabha Atomic Research Center for its analysis, the source added.
For his part, ATS Deputy Inspector General Shivdeep Lande said that the material has a purity of 90 percent.
The ATS is investigating from where the detainees took the radioactive substance and whom they were trying to sell it.