CNN —South Korean authorities are investigating the crowd surge that killed at least 154 partygoers in Seoul, as the rattled nation attempts to come to terms with one of its worst-ever disasters. Nearly all of the victims – at least 150 – have been identified; police told CNN. Three South Korean military personnel were also among those killed, a Korean defense ministry official told CNN. The South Korean government has set a national mourning period starting until the end of November 5, Prime Minister Han Duck-soo said in a briefing. Civil servants and employees of public institutions will wear ribbons to express their condolences during the mourning period, Han said.

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