Families remembered their loved ones 20 years after the 9/11 terror attacks in the US, with grieving relatives vowing to "never forget" those who lost their lives.
Six moments of silence were observed in New York City to mark the moments when four commercial planes crashed and when the the two World Trade Center towers crumbled, killing nearly 3,000 people.
The planes had been hijacked by terrorists on the morning of 11 September 2001.
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