ISLAMABAD, Pakistan (AP) _ A Pakistan International Airlines plane was hijacked Sunday en route from southwestern Baluchistan to the southern port city of Karachi, officials said.

It was reportedly heading to neighboring India, the air traffic control officials said.

There was no immediate word on how many people were on board the aircraft. The identity or nationalities of the hijackers was not known.

The hijacking comes as tensions between Pakistan and India have soared over India's recent testing of five nuclear devices. The two countries have gone to war three times.

The control tower at Karachi's International Airport said the Folker Friendship propeller aircraft was coming from Turbat, 240 miles away in Pakistan's desolate Baluchistan province.