Remains returned to ground zero

A procession through the streets of New York by a convoy of police and firefighter trucks.

They're taking the unidentified remains from the 9/11 attacks to Ground Zero, where the World Trade Center building once stood.

The September 11 attacks in 2001 killed almost 3,000 people in New York, the Washington DC area and Pennsylvania.

But the remains of more than 1,000 people have still not been identified by forensic teams.

They were placed in metal boxes covered by the American flag and taken to a repository at the site of the Manhattan attack.

They'll be kept underneath the 9/11 Memorial Museum, while experts try to match the tissue fragments to the victims.

But as onlookers watched the solemn ceremony, some relatives protested against the move, saying it was wrong to store the remains in what was essentially a site for tourists.