Washington, Sept. 11 -- US President Donald Trump and First Lady Melania Trump on Thursday attended a solemn observance ceremony at the Pentagon to mark the 24th anniversary of the September 11, 2001, terrorist attacks.

The attacks claimed the lives of 2,977 people after hijacked planes struck New York's World Trade Center, the Pentagon, and a field in Shanksville, Pennsylvania. At Ground Zero in New York, the annual tradition of reading aloud the names of those who perished continues, honouring more than 2,700 victims who died in the collapse of the Twin Towers.

The morning of September 11 in 2001 began like any other in New York City. Office workers hurried through crowded streets, tourists paused to admire the skyline, and vendors op...