According to the Doon newspaper, the scientists include Major Islam-ul-Haq, former director of the Kahuta Research Laboratories (KRL) on the outskirts of Islamabad and personal assistant secretary of Dr. Abdul Qadeer Khan, the creator of the Pakistani nuclear bomb.
Besides, the newspaper names retired Brigadier General Tajwar, Drs Mohammad Sayed, Mansour Ahmed and Mohammad Nazir - high-profile heads and members of the KRL, which also carries out uranium enrichment programmes.
They were all detained at their homes and taken in an unknown direction by special service officers. "None of the mentioned persons was arrested, and some of them are simply being interviewed which does not mean they are guilty," said chief of the united military information service, Major General Shaukat Sultan.
At issue are the talks with the leading nuclear physicists of Pakistan, which have been going on for a month, on the alleged sharing of nuclear technologies with neighbouring Iran. Such "interviews" have been held with the father of the Pakistani nuclear bomb too but their results have not been announced.