coy, nice to see you. have a great day. thanks for joining me. i m christine romans. new day starts right now. way in south korea, i m john berman with brianna keilar. it s one of the deadliest disasters to ever hit that country at least 154 people killed in a crush of halloween party goers in seoul. pictures shared on social media show the crowd crammed into an alley. 26 foreign nationals including two u.s. citizens are among the dead. witnesses saying the narrow streets were jammed with people trying to enjoy the first halloween weekend without covid restrictions. ivan watson is live for us on the scene in seoul. do investigators have any idea what triggered this surge? reporter: just sheer mass humanity in the alley ways just steps from where i m standing right now. this is an impromptu memorial that has cropped up in the 24, 48 hours since the disaster. as you can see, people paying their respects, flowers, handwritten notes, candles, photos of some of the victi