New satellite photos of Indian and Pakistani military facilities show the two countries are bolstering their nuclear weapons and missile programs, the Federation of American Scientists said Tuesday.

The federation, a Washington-based private advocacy group on global security, predicted that India and Pakistan may conduct a new round of nuclear weapon tests before they sign the nuclear Comprehensive Test Ban Treaty.

In a news conference at U.N. headquarters in New York, FAS officials released high-resolution satellite images that they said provide visual proof of Indian and Pakistani plans to deploy nuclear weapons.

One satellite image depicts what FAS officials identify as Pakistan's Kahuta uranium-enrichment complex, located 50 km southeast of Islamabad.