According to the Faro District Relief Operations Centre (CDOS), the accident occurred at 09:00, at the Paderne junction on the Lisbon-Algarve motorway (A2) and Via do Infante de Sagres (A22).

The source said the cause of the accident was still unknown.

A police source from the National Republican Guard (GNR) told Lusa that traffic is restricted on the Paderne access to the Lisbon motorway in order to facilitate operations to help the victims.

There are 26 firefighters, the Portuguese Red Cross, the National Medical Emergency Institute and the GNR involved, supported by 11 vehicles.