Two passenger trains have collided in Egypt’s Nile Delta killing at least three people, two of them children, authorities said. The crash happened in the city of Zagazig, the capital of Sharqiya province, the country’s railway authority said in a statement. Egypt’s Health Ministry said the collision injured at least 40 others. Video from the site of the crash showed a train car crumpled by the impact, surrounded by crowds. Men tried to lift the injured through the windows of a passenger car. Train derailments and crashes are common in Egypt, where an aging railway system has also been plagued …