9/11 victims still being identified

WORLD TRADE CENTRE ATTACKS 2001: Hijacked United Airlines Flight 175 approaches and hits the World Trade Centre's south tower, bursting into flames and raining a hail of debris on Manhattan. A gaping hole in the north tower can be seen following a similar attack earlier in the day.

AFTERMATH: Smoke from the remains of New York's World Trade Center shrouds lower Manhattan on September 12, 2001, the day after the deadly attacks.

PENTAGON PLANE: The Pentagon building in Washington suffered major damage after a hijacked commercial airliner, American Airlines Flight 77, crashed into it.

TOWERS COLLAPSE: Smoke and debris fill the air after one of the World Trade Centre towers in New York City collapses.

TWIN TOWERS: Rescue workers remove a man from the World Trade Centre tower in New York City. Both towers were hit by planes crashing into the building. Victims from the attack, many suffering from extensive burns - began arriving at hospitals about an hour after the jets slammed into the buildings.

HELP NEEDED: A New York City fireman calls for more rescue workers to make their way into the rubble of the World Trade Centre.

SEARCH FOR SURVIVORS: Firefighters comb the remains of the World Trade Centre after the collapse.

REMEMBERING 9/11 IN 2002: Thousands of mourners of victims of the attack on the World Trade Centre converged at 'ground zero'. One by one, the names of 2801 victims of the attacks echoed over the devastated site.

REMEMBERING 9/11 IN 2003: Nancy Dwyer, whose sister Lucy Fishman died in the World Trade Centre attacks, joins a demonstration in 2003, against development of commercial structures within the area of the site and calling for a memorial built from bedrock of the World Trade Centre towers.

REMEMBERING 9/11 IN 2004: The 9/11 Commission Report was unveiled in 2004. The commission investigating the September 11 attacks reported 'deep institutional failings' and missed opportunities by both the Bush and Clinton administrations to thwart the hijackings.

REMEMBERING 9/11 IN 2004: A fireman takes part in a commemoration of the victims of the 9/11 attacks at Camp Victory in Baghdad, September 11, 2004. The ceremony was held in one of the former palaces of the Iraqi former President Saddam Hussein.

REMEMBERING 9/11 IN 2006: A woman wears a ribbon and pins in honour of her son who was killed during the 9/11 attack on the Pentagon, during a ground breaking ceremony for a memorial in Washington, 2006. The memorial commemorates the 184 lives lost when American Airlines Flight 77 crashed into the Pentagon.

REMEMBERING 9/11 IN 2006: US Secretary of Defence, Donald Rumsfeld, pauses after laying a wreath at the 9/11 Flight 93 crash site in Shanksville, Pennsylvania, 2006.

REMEMBERING 9/11 IN 2007: Relatives of 9/11 victims make their way along the ramp to a reflecting pool at Ground Zero at the World Trade Centre site, New York, September 11, 2007.

REMEMBERING 9/11 IN 2008: A statue depicting a New York City police officer comforting a young girl in the 9/11 attacks is seen during the seventh anniversary of the disaster in Broomfield, Colorado, 2008.

REMEMBERING 9/11 IN 2009: The "Tribute in Lights" illuminates the sky over lower Manhattan on the eighth anniversary of the attacks.