KARACHI: A student of grade third died on Wednesday at his school, in Shah Faisal area of the metropolis, under mysterious circumstances. The student of a private school is identified as M. Zunain and was reportedly fall to the ground while standing in a queue at the school canteen, the administration of the school said. He was rushed to a nearby hospital, where he could not be revived, the administration added. The school administration said that the child’s death was probably caused by a heart attack. However, some reports also suggested that he suffered from epilepsy. While on the other hand, the child’s parents said he did not suffer from any medical condition.