ROUGH CUT - NO REPORTER NARRATION<br/> <br />Security was tight in Yangon on Wednesday (April 3), a day after a fire caused by faulty electrical equipment killed 13 boys at an Islamic school.<br/> <br />However, some Muslims have voiced concern because the fire followed a wave of anti-Muslim violence in the Buddhist-majority country.<br/> <br />Myanmar's government called for calm in the wake of the tragedy amid the height of sectarian conflict and clashes in recent months.<br/> <br />Yangon's fire department has launched in inquiry into the cause of the fire, along with a electricity company, and representatives from Muslim communities.<br/> <br />Officials said in a statement late on Tuesday (April 2) that the fire was caused by a faulty electricity transformer which short circuited.<br/> <br />The victims died of suffocation when the fire broke in the dormitory of the Islamic school based at a mosque.<br/> <br />About 70 teenage Islamic students were thought to slept in the Mosque compound during the night.<br/> <br />Nei
