<p class="title">Four kidnapped employees of an oil and gas exploration company in Pakistan have been killed by militants near the country's restive northwest tribal region bordering Afghanistan, officials said Wednesday.</p>.<p class="bodytext">They were abducted from North Waziristan's Spinwam Abakhel area on Tuesday. Later, their bullet-riddled bodies were discovered.</p>.<p class="bodytext">Security forces have launched an operation to nab the militants.</p>.<p class="bodytext">No group has claimed responsibility for the killing.</p>.<p class="bodytext">Last week, two workers of the same company were kidnapped. One of them was released later.</p>.<p class="bodytext">North Waziristan has long been a sanctuary for the Pakistani Taliban and other militant groups. </p>
<p class="title">Four kidnapped employees of an oil and gas exploration company in Pakistan have been killed by militants near the country's restive northwest tribal region bordering Afghanistan, officials said Wednesday.</p>.<p class="bodytext">They were abducted from North Waziristan's Spinwam Abakhel area on Tuesday. Later, their bullet-riddled bodies were discovered.</p>.<p class="bodytext">Security forces have launched an operation to nab the militants.</p>.<p class="bodytext">No group has claimed responsibility for the killing.</p>.<p class="bodytext">Last week, two workers of the same company were kidnapped. One of them was released later.</p>.<p class="bodytext">North Waziristan has long been a sanctuary for the Pakistani Taliban and other militant groups. </p>