LISBON, Portugal -- More than 100 wildfires stretched thousands of firefighters to the limit in northern Portugal on Wednesday, with seven deaths since the worst spate of fires in recent years spread out of control over the weekend.

Deadly wildfires in central and northern Portugal have pushed emergency services to the limit and much-needed reinforcements will arrive on Wednesday from Spain and Morocco, the civil protection authority said.

A state of calamity has been declared in Portugal after 100 wildfires left seven dead and endangered 210,000 people.