The incident took place when fans attempted to enter the Olembe Stadium in Yaoundé to watch the Cameroon v Comoros match.
The Confederation of African Football (CAF), which organizes the Africa Cup of Nations, said it was aware of the crush.
“CAF is currently investigating the situation to obtain more details about these incidents. We are in constant contact with the Cameroonian authorities and the local organizing committee,” a CAF spokesperson said in a statement.
CAF Secretary General Veron Mosengo-Omba will visit the victims in Yaoundé, the statement said.
Monday’s incident came a day after another tragedy in the capital.
A government statement said at least 16 people were killed on Sunday morning when a fire swept through a nightclub. Another eight people were seriously injured and are in intensive care.
At a press conference held at the scene, the director of Yaoundé Central Hospital said several people are in critical condition.
Explosions of fireworks caused the ceiling of the Liv Nightclub to catch fire, resulting in two strong explosions that caused panic among those in attendance, according to the Cameroonian Ministry of Communications statement.
President Paul Biya ordered a thorough investigation into the incident and offered his condolences to the families of the victims, the government statement said.