Egypt closed downtown Cairo's Sadat metro station over security concerns on Wednesday, the sixth anniversary of the popular revolution that toppled longtime president Hosni Mubarak.
The station has been shut down "due to security reasons. Trains [will] not stop at the station," the Egyptian Company for Metro Management and Operation said on its official Facebook page late on Tuesday.
Located under the iconic Tahrir Square -- the epicenter of the 2011 uprising and a venue of many mass protests and clashes -- Sadat station has been repeatedly closed for security reasons on multiple occasions since the 2013 ouster of Islamist president Mohamed Morsi.
The station's longest closure lasted nearly two years, beginning in August 2013 on the back of nationwide unrest following Morsi's removal.
The station is one of two hubs where commuters can switch between the city's two main lines.
Over 3.5 million of greater Cairo's 21 million inhabitants rely on the subway for their daily travel, according to official estimates by the country's national tunnels authority.