Hundreds of firefighters battled wildfires in Portugal and Greece on Sunday, with Spain and Italy sending reinforcements to help contain a massive blaze that's been burning for more than three days.

The fire in Vouzela is the main concern, with around 1,100 firefighters deployed. The blaze keeps spreading as the country remains on red alert due to the heat.

The fire in Vouzela is the main concern, with about 1,100 personnel on the ground. The blaze is still spreading as the country is under a red heat alert.