Authorities are conducting a search at a high school in the southwestern city of Gwangju on Saturday after an online post claimed that an explosive device had been planted at the school, officials said. According to the Gwangju Bukbu Police Station, police and fire authorities received a report around 11:50 a.m. regarding an online message that claimed a bomb had been placed at Gwangju Jeil High School. Search operations are under way at the school premises, but no explosive devices have been found so far, they said. The threatening message on an online community also claimed that the "future of Paichai High School has been violated," in what appeared to be a reference to a recent controversy involving school baseball teams. Some players of Paichai High School in Seoul were previously heard shouting such phrases as "Let's go to Starbucks" and "Tank Day" toward the Gwangju Jeil dugout during a recent high school baseball tournament, sparking accusations of mockery and regional insults. Amid strong criticism over the incident, the Korea Baseball Softball Association imposed a six-month susp