Pakistan has test-fired a surface-to-surface ballistic missile that can carry a nuclear warhead and has a range of some 2,750 kilometers.
Pakistan officials say the December 11 launch was meant to "validate various design and technical parameters" of the Shaheen-III, which was first test-fired in March.
Officials said in a statement that the missile landed in the Arabian Sea.
The testing comes just two days after Islamabad hosted a regional peace conference that called for the resumption of negotiations between the Afghan government and the Taliban.
Pakistan became a declared nuclear power in 1998.
Its old regional nemesis, India, has been a nuclear power since 1974.
The two countries have missile systems that can strike deep inside the other's territory.