In pictures: 9/11 anniversary

1 of 7 Family and friends filed into Ground Zero to mark the second anniversary of the 11 September attacks in New York

2 of 7 The service was kept deliberately low key with the focus firmly on those whose relatives died there

3 of 7 Children read out the names of everyone who was killed in the World Trade Center's twin towers

4 of 7 New York paused for moments of silence to mark the exact times when each tower was hit and when each fell

5 of 7 The US president and vice-president, and their wives, held a minute's silence on the White House lawns

6 of 7 It may be the last time relatives can stand in Ground Zero where many believe their loved ones' remains to be

7 of 7 Construction is due to start soon on a new tower with offices, parks and a yet-to-be-decided memorial