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Pakistan's navy has successfully test-fired missiles and torpedoes from ships, submarines and aircraft in the Arabian sea, officials say.
The tests were followed by a statement saying they sent a "clear message to forces having nefarious designs".
India and Pakistan regularly test their missile systems and they normally notify one another ahead of such tests.
Last month the two sides held their first formal talks since the November 2008 Mumbai attacks.
India says the attacks, which left 174 people dead - including nine gunmen - were partly planned on Pakistani soil.
It is not clear if the missiles tested on Friday were capable of carrying nuclear warheads.
The tests included anti-surface missiles, air-to-surface missiles, and surface-to-surface missiles, the AP news agency reported.
Last month India successfully tested a nuclear-capable surface-to-surface missile.
The Pakistan Navy has announced the firing of test missiles from ships, submarines, and aircraft during operations in the Arabian Sea. 

Pakistani officials said that the tests were a display of commitment to the protection of Pakistan and sent "a message of deterrence to anyone harbouring nefarious designs against Pakistan".  The statement, released shortly after the operation, also said that the tests were designed to measure the "lethality, precision and efficacy" of the weapons.

Pakistan's Naval Chief, Admiral Noman Bashir, was a witness to the event, and said that he was pleased with the tests, saying that he was satisfied with the state of the Pakistani Navy. He also commended the performance of the Navy personnel involved with the tests.

The maneuvers included tests of newly acquired missiles of a Chinese design, and came just a month after India tested a missile of similar design to some of the Pakistani weapons. India's test involved a missile capable of carrying nuclear weapons, although it was unclear if Pakistan's test included weapons capable of carrying a nuclear warhead.