Operations of Cairo's underground Metro system were partially disrupted Thursday morning following a failure in the service's electricity network, the Egyptian Company for Metro Management said in a statement.
The power failure was caused by the fall of a crane on the Metro's power lines between Ghamra and Al-Demerdash stations on the Metro's first line, which runs from Helwan to El-Marg.
The crane, which belongs to a privately-owned advertising firm, was lifting a billboard outside the Metro line wall.
Train movement was halted at the central Cairo stations of Ghamra, Al-Demerdash and Mansheyet Al-Sadr on the Metro's first line, the company explained.
The disruption also caused delays in train arrivals and repeated mid-station stops.
The Metro company said it has deployed busses to transport commuters between the three stations until "emergency and technician teams complete the repair to the electrical network."
Transport police seized the crane and detained those responsible for the incident.
More than three million commuters use the Metro every day.