Firefighters in Spain, Portugal and Greece battled ongoing wildfires Friday, an important religious holiday in all three countries, as persistent hot, dry conditions challenged efforts to contain the blazes.

Spain on Thursday mourned its third wildfire death this week and Greece began beating back a blaze threatening its third-largest city as an unrelenting heatwave stoked tinderbox conditions in southern Europe.

Firefighters in Greece, Portugal, and Spain continue to battle wildfires amid a prolonged heatwave.