The Rio Olympics are off to a rough start after organisers were forced to cut open a stadium gate after reportedly losing its key. 

The gate to the iconic Maracana Stadium, where many Olympic events will be held, had to be cut open by two men described as firemen.

BBC reporter Julia Carneiro captured the incident on video outside the stadium before Wednesday’s women’s football match between Sweden and South Africa.

The video shows the two firemen using bolt cutters to break the padlock and open the gate. “#oops”, Carneiro tweeted with the video.

In a tweet sent an hour prior to the incident, Carneiro said spectators were forced to queue for up to two hours before being guided to an alternative entrance.

Earlier this week, Associated Press reported that some 1,400 athletes may be at risk of illnesses due to high levels of pollution in Rio’s waters. Swimmers and other athletes who consume just three teaspoons of the contaminated water will almost certainly contract viruses that can cause stomach and respiratory illnesses, AP wrote. 

Around 1.3 million tickets for the Olympics, kicking off today, remain unsold.