ISLAMABAD, Pakistan (CNN) -- Two Pakistani security guards were killed Friday when they stopped a suicide car bomber from barreling into a military outpost.
Their actions averted more deaths, a military official said.
The incident occurred in the Swat Valley, near the tribal region along the Afghan border that is populated with hard-line militants.
The outpost is located close to the town of Mingora about 68 miles northeast of Peshawar, the capital of Pakistan's North-West Frontier Province.
About 70 to 80 soldiers are stationed at the Swat Valley site, and more military personnel would have been killed if the guards hadn't intercepted the car bomber, said the official, who asked not to be named.
The incident unfolded when a Suzuki pickup approached the post. The security personnel signaled the driver to stop, but the driver refused, the official said. The guards then fired shots at the car, which exploded and killed them.
All About Pakistan • Swat Valley
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