Nightclub boss arrested over horror blaze

Locked doors at a Buenos Aires nightclub – some padlocked, others tied shut with wire – blocked or slowed the escape of many concert fans who fought to escape a fire that killed 175 people and injured hundreds, survivors and officials said.

Investigators said they believed one of Argentina’s worst disasters began when a flare was fired during a rock concert, igniting the foam ceiling of a club crowded with mostly teenagers.