A massive fire has devastated a music bar in Bangkok, killing at least 27 people and critically injuring 25 others. The fire broke out shortly before midnight Sunday at the Rong Beer Na Ladprao bar. Photos showed people fleeing as flames engulfed the building. By Monday morning, forensic teams were investigating the scene. Officials say many victims were trapped in windowless bathrooms near a rear exit. Investigators are focusing on the ceiling above the performance stage for clues. Prime Minister Anutin Charnvirakul says a musician reported seeing smoke from a circuit breaker before the power went out.