MADRID-Firefighters made headway Saturday in their battle against a vast wildfire raging out of control in the forested interior of Tenerife that has forced 4,500 people to flee the Spanish holiday island. The blaze, which officials say is the most “complex fire” to hit the Canary Islands in 40 years, broke out late on Tuesday in a mountainous area of northeastern Tenerife. Firefighting efforts during the day “progressed well although the fire is still out of control”, Canary Islands leader Fernando Clavijo told reporters in a late-night briefing. The blaze has so far destroyed 5,000 hectares (over 12,300 acres) of land and has a perimeter of 50 kilometres (30 miles), he said. Montserrat Roman, head of civil protection for the seven-island archipelago, said more than 225 firefighters would continue efforts during the night to tackle the blaze, which had already affected 10 municipalities.