Emergency declared over massive wildfire near Yosemite National Park

The fire has spread rapidly since Friday (Noah Berger/AP)

A state of emergency has been declared in California’s Mariposa County due to a massive wildfire near Yosemite National Park.

The so-called Oak Fire exploded in size on Saturday into one of the state’s largest wildfires of the year, prompting evacuation orders for thousands of people and shutting off power to more than 2,000 homes and businesses.