ISLAMABAD (PL).— U.S. attack helicopters bombarded Pakistani territory along the border with Afghanistan, leaving three workers injured and eight missing, it was reported Monday, May 8 in this capital.

According to the GEO television network, the copters carried out their attack in the Angor Adda region, about 60 kilometers west of Wana, Pakistan’s Waziristan South operations center.

It is believed that Pentagon helicopters violated Pakistani territory and bombarded the mountainous areas while workers were extracting minerals. According to the report, the missing workers may have been killed.

The Pakistani military is investigating whether or not U.S. forces participated in this attack, and plans to present a formal complaint if evidence confirms that that was the case.

However, according to information from Kabul, a U.S. military spokesman in Afghanistan stated that their helicopters fired on a truck near the Pakistan border.

Lieutenant Colonel Paul Fitzpatrick told the media in the Afghan capital that "we attacked a truck loaded with rockets, and then on the ground, we found two more vehicles in a cave with the same number of missiles."

Fitzpatrick said that the attack occurred near the opposite border (south of) of the Waziristan region in northern Pakistan.

Previously, U.S. planes had repeatedly bombarded Pakistani territory, and last January, killed 17 farmers at a village wedding.