At least 56 people have been killed in a crush following clashes at a football match in Guinea’s second-largest city, Nzérékoré, the government says.

Prime Minister Mamadou Oury Bah said a “stampede” at the event led to a number of victims on Sunday and called for calm.

One doctor, who did not want to be named, told AFP news agency that there were “bodies lined up as far as the eye can see in the hospital”.

“Others are lying on the floor in the hallways. The morgue is full,” he added.

Local media said police had used tear gas after supporters of the visiting team, Labé, threw stones towards the pitch in anger at the referee.

“It all started with a contested decision by the referee. Then fans invaded the pitch,” one witness told AFP.

Videos and images on social media appear to show chaotic scenes outside the stadium, with large crowds attempting to climb over walls and numerous bodies on the ground.

Some of those lying unresponsive on the ground appear to be children.

The BBC has not been able to independently verify these videos.

Paul Sakouvogi, a local journalist in Nzérékoré, told the BBC that internet access in the region has been restricted, and that police are guarding the entrance to the hospital where the injured are being treated.

“I observed six police pick-ups positioned in front of the three entrances to the hospital. They allowed only the medical staff to access the hospital, while the others were told to go back the way they came.”

An inquiry is being launched to find those responsible, Prime Minister Bah said in a statement, calling the events “tragic” and offering his condolences to the bereaved.

He also promised full medical and psychological to all the injured.

Thousands of spectators were present when the crush happened at a match between Nzérékoré and Labé, local news website MediaGuinée reported.

It said Sunday’s match was part of a tournament in honour of President Mamady Doumbouya, who seized power in a coup in September 2021.

In recent months there has been increased scrutiny of powerful figures in Guinean football.

In July, Aboubacar Sampil, who is president of the country’s football body Feguifoot, became the subject of an investigation into corruption and violence in football.

A junior colleague accused Mr Sampil, who also leads the board of directors for local team ASK, of facilitating violence and trying to influence referees at a match that ASK was losing 0-1 to Milo FC.

The latter team had to abandon the game and had trouble leaving the ground safely, according to documents filed to Feguifoot’s ethics body.

Among other things, Mr Sampil has also been accused of bypassing protocol and unliterally appointing people to jobs.

He has always denied any wrongdoing.