The opening day of the Africa Cup of Nations 2012 - in pictures

A young woman wears a wig with the colours of Equatorial Guinea's football team Photograph: Ariel Schalit/AP

A Equatorial Guinea supporter wears a mask as he waits to enter the Estadio De Bata Photograph: Ariel Schalit/AP

A member of Equatorial Guinea's police special forces and his security dog try to control fans Photograph: Amr Abdallah Dalsh/Reuters

A supporter of Equatorial Guinea at the start of the match against Libya Photograph: Ariel Schalit/AP

Supporters of Morocco and Equatorial Guinea dance around a toy tiger Photograph: Ariel Schalit/AP

Equatorial Guinea fans flee from tear gas fired by special police forces as they try to get inside the Estadio de Bata Photograph: Amr Abdallah Dalsh/Reuters

Fans wait to go inside the stadium for the opening game of the tournament Photograph: Amr Abdallah Dalsh/Reuters

Fans force their way into the stadium ahead of Equatorial Guinea's Group A match against Libya Photograph: Ariel Schalit/AP

Police fire tear gas at fans as they try to get inside the stadium Photograph: Amr Abdallah Dalsh/Reuters

Band members wait for the opening ceremony of the tournament Photograph: Ariel Schalit/AP

The end of the opening ceremony was marked by fireworks Photograph: Ariel Schalit/AP

Dancers wear traditional tribal costumes as prepare for the opening ceremony Photograph: Ariel Schalit/AP

Dancers perform during the opening ceremony of the Cup of Nations Photograph: EPA