South Korean officials say dozens of people were in cardiac arrest after being crushed by a large crowd pushing forward on a narrow street during Halloween festivities in the capital Seoul. Choi Cheon-sik, an official from the National Fire Agency, said around 100 people were reported as injured during the crowd surge Saturday night in the Itaewon leisure district. He did not give a specific number of the people being treated for cardiac arrest Sunday but said they were in the dozens. Choi said it was believed that people were crushed to death after a large crowd began pushing forward in a nar…