Medical examiners had conducted DNA tests to establish the identity of three badly charred persons, who were burnt to death after their car fell off el-Tonsi Bridge and burst into flames when it hit the ground near a flee market on the outskirts of Cairo early Tuesday, they said Wednesday. "The DNA tests, which are being conducted at Cairo Morgue will help us know who are these unidentified persons," the police said. A huge fire, which raged for five hours through el-Tonsi flee market, broke out after the small car exploded near a coffee shop full of butane cylinders. Hundreds of wooden shops, used as store rooms were destroyed in the fire, which started after the car accident.