ISLAMABAD, Pakistan (AP) - Pakistan on Friday successfully test-fired an upgraded version of a medium-range ballistic missile capable of carrying a nuclear warhead, a military statement said.

The army's Strategic Missile Group launched the Ghauri missile, which has a range of 1,300 kilometers (810 miles) from an undisclosed location, it said.

President Pervez Musharraf, the army chief, other officials and scientists witnessed the test, it said.

Pakistan became a declared nuclear power in 1998 when it conducted underground nuclear tests in response to those carried out by neighboring India. It also tested its first missile the same year.

The two South Asian rivals routinely test their various missiles.

On Friday, Musharraf told troops in the undisclosed exercise area that Pakistan had "developed a strong nuclear deterrence capability," the military statement said.

Pakistan and India have a history of bitter relations. The two neighbors have fought three wars after gaining independence from Britain in 1947.