Police commandos and barricades will be deployed across downtown Seoul this weekend as authorities brace for one of the largest-ever crowds for K-pop group BTS' comeback concert, officials said Friday. BTS is set to perform at Gwanghwamun Square on Saturday to mark its return after a four-year hiatus, with up to 260,000 people expected to fill the area stretching from the main stage to Sungnye Gate, over a kilometer away. It would mark one of the largest crowds in the area since the 2002 Korea-Japan World Cup, when around 200,000 to 250,000 people gathered to cheer for the home team. As fans and visitors are expected to flock from across the world, authorities are on high alert, with plans to deploy about 15,000 personnel for safety management, including some 6,700 police officers. Police plan to operate tactical teams to respond to drone threats, while triple-layer barricades will be installed around the concert site to ward off potential terror threats. Concertgoers will have to go through metal detectors, with police planning further checks with handheld detectors. Those without identi