Iranian border guards opened fire at a vehicle carrying a group of Pakistanis, killing four people and wounding two others in a remote area in the southwest, Pakistani officials said Thursday. The incident happened near the border village of Mashkel in Baluchistan province on Wednesday, local police said. According to The Associated Press, government administrator Sahibzada Asfand said it was unclear why the Iranian forces opened fire. Local police say the bodies of the four men had been handed over to their families.