At least nine people died in a stampede at a soccer stadium in El Salvador on Saturday, authorities said, in an incident that left some fans injured and at least two hospitalized.

Videos circulating on Twitter and published by local media showed dozens of people dressed in white running towards the exit of the stadium, with others lying on the ground in a heap on top.

It was not immediately clear what caused the rush to the Cuscatlán Stadium in San Salvador, El Salvador, where the first division soccer teams, Alianza and FAS, played in the second leg of the quarterfinal.

In a video posted on YouTube, the game’s announcers said they could see commotion in the stands, noting that some people appeared to be unconscious. Fans eventually entered the arena, and the game was stopped, commentators said during the game.

Around 11pm Eastern, authorities he said that they were trying to make it easier for ambulances to get in and out of the stadium.

El Salvador’s health minister, Francisco Alabi, said that the country’s hospitals are providing medical care to several people injured in the incident, adding that workers are doing “everything they can” to save their lives.

Mr. Alabi shared photos Twitter of the action outside the stadium, with ambulances lined up with fans standing beside the vehicles.

The football association in this country said in a words on Twitter that it will “immediately request an incident report.”

A local radio station posted a video of fans shaking their shirts next to people on the ground in an attempt to cool them down.