Nearly a month after wildfires blazed on the Portuguese island of Madeira, more fires have broken out in mainland Portugal . Seven people have reportedly died so far in the fires, which are spreading between the northern district of Aveiro and Porto .

More than 5,000 personnel are battling a number of wildfires, the authorities said, and the prime minister called it an “extremely difficult weather situation.”

More than 100 wildfires are stretching thousands of firefighters to the limit in northern Portugal. The country’s worst spate of fires in recent years is blamed for seven deaths since they spread out of control over the weekend.