As bereaved families and friends struggle to make sense of a Halloween crowd crush that killed 156 people in South Korea's capital, their grief is mixed with anger about officials' failure to employ crowd controls in a small nightlife district swarmed with tens of thousands of partiers.

South Korean officials say at least 26 foreign nationals were among the more than 150 people killed in the incident in Seoul's Itaewon district. Many were young adults celebrating Halloween.