South Korea opens investigation into deadly Itaewon crowd crush in Seoul

Shops closed and concerts cancelled after Halloween party disaster killed more than 150 people, as police questioned over crowd control

• I don't know how to live': grief over loved ones lost in Seoul's deadly Halloween crowd crush

South Korean authorities have opened an investigation into the deaths of more than 150 people, in a crush in a nightlife district in Seoul on Saturday as experts said crowd controls could have reduced the surge that led to the disaster.

It remained unclear what led the huge Halloween party crowd to head into a narrow alley in the Itaewon area. Witnesses said people fell on each other like dominoes", and some victims were bleeding from their noses and mouths while being given CPR.