A high-rise building has collapsed in the Iran capital Tehran after a fire engulfed its top floors. The fire broke out at the 17-story structure in downtown Tehran on Thursday morning. Scores of firefighters were deployed to battle the blaze. However, their efforts remained futile. Many people including firefighters are trapped. Thirty-eight people are also reported to have been injured in the incident. The 50-year-old building was among the first high-rises built in Tehran. It included a shopping center and clothing workshops, which had been evacuated.