A fast-moving wildfire exploded to roughly 10,200 acres near the Los Angeles County community of Castaic Wednesday morning, prompting mandatory evacuation orders and road closures, authorities said.

A new wildfire was reported today at 3:36 p.m. in Los Angeles County. Kris Fire has been burning on private land. There is no update on the containment of the fire and its cause remains unknown.

The Hughes Fire has spread over 8,096 acres after starting just before lunchtime in Los Angeles County's Castaic Lake area on Wednesday.

Roughly 31,000 people were ordered to flee an area north of Los Angeles on Wednesday after a fast-moving wildfire exploded, growing to more than 10,000 acres within hours, officials said.