QUETTA, Pakistan (AP) — A Pakistani official says Iranian border guards opened fire at a Pakistan patrol van, killing a member of the paramilitary Frontier Corps and wounding three other troops.

A spokesman for the Frontier Corps, Abdul Wasay, says the shooting took place on Friday when about 30 Iranian guards in six vehicles started shooting at the Pakistani van in the Chaukab area, 2 kilometers (1 mile) inside Pakistani territory.

There was no immediate comment from Tehran.

The shooting comes a day after Iranian Brig. Gen. Hussein Salami issued a stark warning to Pakistan, saying that Iranian forces may enter Pakistani territory to “prevent terrorists” from entering Iran.

Last week, four Iranian guards were killed by unknown attackers in the eastern Iranian province of Sistan and Baluchistan which borders Pakistan’s southwestern Baluchistan province.

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