Police on Friday blamed shoddy construction and poor materials for last week's deadly gymnasium collapse that killed 10 people, mostly college students, and injured 105 others.07:34 ? ‎28/‎02/‎2014 The roof of the gymnasium at the Mauna Ocean Resort in Gyeongju, a historic tourist city 370 kilometers southeast of Seoul, caved in on Feb. 17 while some 560 incoming freshmen from the Busan University of Foreign Studies were holding a welcome party inside the building