It happened in a region between stations Muelle YPF and Gamela in the General Mosconi neighborhood, popularly known as "Kilómetro 3".

As the emergency brake didn't work either, the tran started a headlong race towards Comodoro Rivadavia, helped by a downward gradient towards the city.

Despite the desperate attempts of the train driver, it was impossible to stop the railcar, which crashed a Drewry unit departing from Comodoro Rivadavia towards Astra station.

[2] A total of 100 people (from both railcars) were involved in the accident, with 3 fatal victims, they were Marta Fernández, Osvaldo Barceló, and Agustín De Alba.

On August 12, 2021, the municipality of Comodoro Rivadavia paid hommage to victims and their relatives placing a plaque that tells the unfortunate event.