Nasser metro station reopened on Sunday at 10pm, and trains are now operating normally, metro spokesperson Ahmed Abdel-Hady told Ahram Online.
Located near the High Court, between Tahrir and Ramses squares, it had been closed since 2pm on Sunday for security reasons.
Army tanks and police armoured vehicles had been deployed around Tahrir Square after protests were held in the area following a court verdict on Saturday that cleared ousted president Hosni Mubarak of all charges, including conspiracy to kill protesters during the January 2011 revolution.
The dispersal of the protests left two dead and several injured.
Tahrir Square was also reopened to traffic early Monday morning after it was closed following the verdict.