PESH AWAR - At least four suspected persons were killed and two others sustained injuries in a US drone missile attack in South Waziristan Agency on Friday. Sources said that a suspected US drone fired at least two missiles at a house situated in Sheen Warsak area of Tehsil Barmal, South Waziristan Agency. Resultantly, four suspected persons were killed while two others sustained injuries. They said that it was confirmed that a US drone had fired at least two missiles at a house owned by Ahmad Noor in Sheen Warsak village. Some reports also said that two of those killed in the attack were stated to be foreigners. They said that the targeted house was destroyed completely in the strike. The sources said that it was 48th drone strike in Pakistan in 2011, killing dozens of suspected persons and injuring many more. Islamabad has been condemning the strikes as violations of the countrys sovereignty, but to no avail. Pakistan considers the attacks a way to fuel peoples sentiments against the US.