Pakistan said Saturday it had filed a formal protest with the US Embassy over a deadly airstrike on a border village that reportedly targeted al-Qaida's No. 2 and killed at least 17 people. "According to preliminary investigations there was foreign presence in the area and that, in all probability, was targeted from across the border in Afghanistan," the Foreign Ministry said in a statement. "The investigations are still continuing." "Meanwhile, the Foreign Office has lodged a protest with the US Ambassador in Islamabad," the ministry said. The US Embassy had not yet received any protest by mid-evening Saturday, embassy spokesman Rakesh Surampudi said.