buenos dias. good morning, welcome to your new day. it is sunday, october 30, halloween eve. i m boris sanchez. halloween eve. good to be with you. i m ambra walker. thank you for starting your among morning with us. we start in asia. south korea declaring a national day of mourning after a deadly crowd surge killed 153 people who were out celebrating halloween in the capital of seoul. we have to warn you, some of the images we re going to share are graphic. authorities are still investigating exactly what caused this crowd crush. but emergency officials first began receiving reports of people buried in crowds on saturday evening. there were thousands of people out that night in an area of the city with very narrow streets as you can say. they re packed in alleys. and witnesses say people were trapped and panicked because they couldn t breathe with dozens of people being administered cpr on the sidewalks. i turned around and i told the crowd, you can t come this way.