South Korea: How the Halloween tragedy unfolded

After more than 150 people died in a deadly crush in Seoul on Saturday night, the BBC looks at how the tragedy unfolded.
Gathering crowds
Thousands of mainly young people had converged in Itaewon in the centre of the South Korean capital of Seoul.
It's a lively party spot with many narrow streets and alleys filled with bars and restaurants.
Some s say more than 100,000 had descended on the area that evening.
The neighbourhood is served by Itaewon metro station, and videos on social media show streams of people arriving to celebrate Halloween from early evening on Saturday.
Nuhyil Ahammed, 32, was in the crowd. The IT worker from India lives nearby and had been to Halloween parties in Itaewon before, but says things were very different this year.

"It was crazy," he told the BBC. "From 5pm there were too many people on the streets. So I was thinking, what's it going to be like from seven or eight":[]}