The Bush administration believes it has undermined al-Qaida's plans for attacking the United States with the recent arrests of suspected terrorists and the seizure of detailed surveillance of financial buildings. «I certainly think that by our actions now that we have disrupted it,» said Frances Fragos Townsend, President George W. Bush's homeland security adviser. «The question is, have we disrupted all of it or a part of it? And we're working through an investigation to uncover that,» she told «Fox News Sunday.» In cooperation with U.S. intelligence agencies, authorities in Pakistan and Britain have detained suspected al-Qaida operatives, while computer files uncovered in Pakistan contained surveillance information of five financial sites in New York, Washington and Newark, New Jersey. The United States issued a terror alert based on that information. Townsend said it is not clear how much has been uncovered about a potential plot around the Nov. 2 presidential election. «This certainly looks like it was a piece of it,» she told CBS' «Face the Nation.»