The riot broke out in connection with a disputed penalty situation when angry supporters stormed the pitch.
Local media describe the start of the tumult as the penalty situation infuriating supporters, who began throwing stones. Then, security guards responded by using tear gas.
According to AFP, at least 56 people have been killed and several have been taken to hospital.
Bodies are lined up as far as the eye can see inside the hospital. Others are lying on the floor in the corridors. The morgue is full, says a doctor who wishes to remain anonymous, according to AP.
According to local media, the final match between Labe and Nzérékoré was part of a local tournament organized as a tribute to Guinea's junta leader Mamadi Doumbouya, who seized power in a coup in September 2021.
Doumbouya claimed at the takeover that he "prevented the country from sliding into chaos and would make up for the previous government's broken promises".
Doumbouya has, however, received strong criticism for not being able to live up to his promises and for his way of governing the country.