A raging wildfire has displaced over 5,000 people near the city of Los Angeles in the US State of California.

The blaze in the affluent Calabasas area, mostly inhabited by celebrity families, has already destroyed several buildings.

However, there have been no reports of injuries.

Since the inferno started Saturday, it has already scorched more than 500 acres, reports said. Hundreds of firefighters are still trying to control the blaze.

Officials say rising temperatures and strong gusts of wind have made it difficult to contain the situation.

Authorities believe the blaze started after a pickup truck struck a power pole and triggered a transformer explosion.

"Witnesses reported that the truck was traveling at a high rate of speed before colliding into a power pole, causing the pole to fall and a transformer to explode, thus igniting the Calabasas fire," said a local official.

The fire has been dubbed the "Old Fire" due to its proximity to Old Topanga Canyon Road. It came right up to the edges of Calabasas High School and Viewpoint School.

Calabasas and the nearby Santa Monica Mountains have previously experienced many dangerous blazes over the years.