United States expressed hope that Pakistan will bring the perpetrators of the Mumbai terrorist attack to justice. "We would hope that the Pakistani authorities will continue their investigation and bring the perpetrators of the attacks to justice," Assistant secretary of State for Public Affairs P J Crowley said. Replying to a question about Malakand operation, US Deputy Secretary said it is a serious and successful effort which boost the sense of protection among the people and they are now more determined. Pakistani government should pay more attention on it whereas people be patient on the problems occurred during the mission.