A Jerusalem yeshiva was engulfed in flames early Saturday morning when a defective hotplate ignited a fire. Firefighters were called to the scene shortly after 1 a.m. and were able to evacuate the unidentified building and extinguish the blaze. No injuries were reported. The extent of damage to the building remains unclear. A subsequent investigation determined that the hotplate, which was left on near cloth during Shabbat, was not industry approved. According to fire officials, a number of fires have been caused over the years during Shabbat by defective hotplates, as well as hotplates placed near flammable materials, such as dish rags or napkins.