Portugal's health authority said Friday it was reconsidering whether to allow fans into sporting events, including next week's Formula One Grand Prix, for which thousands of tickets had been sold, as the country tries to contain a surge in COVID-19 infections.

Without providing further details, the head of the DGS authority, Graca Freitas, told a news conference another option under consideration was to reduce the number of spectators.

The director of the circuit in Portimao, in the country's southern Algarve region, said in August around 28,000 tickets had already been sold but warned that fans would not be allowed in if the pandemic worsened.