ISLAMABAD, Nov. 5 (Xinhua) -- At least four persons were killed and four others injured in the attack of suspected U.S. unmanned spy plane on Pakistan's South Waziristan tribal agency late Wednesday night, local TV channels reported Thursday.

    According to sources, the identity of the injured and killed persons has yet to be ascertained but the wounded men have been rushed to hospital for treatment, the private channel GEO News reported.

    Drone's flights over the area are still underway, triggering panic among public, witnesses said.

    The U.S. drones regularly hit hideouts of the militants in the Pakistani tribal region, which Washington considers as the center of Taliban and al-Qaida remnants. Pakistan opposes the U.S. strikes inside the country's tribal regions and seeks the drone technology. But the U.S. does not accept Islamabad's request.