SEOUL, South Korea (AP) — Thai authorities are investigating a Bangkok bar fire that killed at least 27 people and injured dozens more, the latest in a long history of catastrophic fires at bars, clubs, and other nightlife venues worldwide.Experts say the high death toll may reflect factors common to past entertainment venue fires, including inadequate safety measures. The blaze, which broke out shortly before midnight Sunday, apparently spread rapidly across a ceiling lined with flammable decorative materials before reaching the main entrance. Local media suggest crowded conditions, obstructed escape routes, and panic may have hampered evacuation.Here’s what to know about the fire:Investigators focus on how fire spreadVideos shared online by witnesses show a blaze engulfing the Na Ladprao music bar as thick black smoke pours from the front entrance and people scramble to flee. Photos and videos from the scene Monday showed Thai investigators examining the gutted building, where the heaviest damage appeared to be overhead. Large sections of the ceiling were destroyed, blackened and charred, while the floor and tables below, some still with beer bottles on them, were blanketed in ash and debris.