A fire tore through an overcrowded Indonesian prison in the early hours of yesterday when most inmates were asleep, killing 41 people and injuring dozens of others, an official said. Firefighters extinguished the blaze -- which was mostly contained within one block that housed prisoners jailed on drug charges -- at around 3:00 am and evacuated the victims. Authorities were still investigating the cause of the incident at Tangerang Penitentiary, just outside the capital Jakarta, but suspected an electrical fault may have been to blame. The penitentiary department’s website showed the jail had just over 2,000 inmates, more than three times as many prisoners than it was designed to hold.