Wildfire shuts Interstate 5 in Southern California amid scorching heat wave

Dozens of homes evacuated from fast-moving blaze; 8 firefighters treated for heat-related problems

The Route Fire in Castaic in northwestern Los Angeles County raged through about 4,625 acres of hills containing scattered houses.

Interstate 5, a major north-south route, was closed by a blaze that burned several hundred acres in only a few hours.

There were no immediate reports of damage to buildings but a mobile home park with 94 residences was evacuated.

An elementary school also was evacuated.

Temperatures in the area hit 107 degrees and winds gusted to 17 mph, forecasters said.

Eight firefighters were treated for heat-related problems, including six who were sent to hospitals.