Line Fire initially started 6:33 p.m. Sep. 5 in San Bernardino County.

A wildfire in San Bernardino County, California flared up on Sunday, forcing evacuations, after previously being under control. The Line Fire prompted the San Bernardino County Sheriff's Department to instruct residents of Seven Oaks to evacuate as flames surged.

Flare-ups in the San Bernardino National Forest have prompted officials to issue a new evacuation order as firefighters continue battling against the Line Fire.

Nearly a month after it was reportedly intentionally started, the more than 43,000-acre Line Fire continues to prompt mandatory evacuations orders and warnings for residents in the San Bernardino Mountains.

Nearly a month after the Line Fire began, a new evacuation order and warnings have been issued for areas burning in the San Bernardino Mountains. That came after a significant flare up in the fire Sunday.

It has burned 42,836.6 acres after being active for 24 days, an increase of 2,618 acres since the last update. A crew of 1,195 firefighters has been working on site and they managed to contain 83% of the fire as of Sunday evening. The fire is suspected to have been started deliberately.

A weekend flare-up that ignited nearly a month after the Line Fire first began in San Bernardino County grew by hundreds of acres overnight and has some mountain communities under evacuation orders and warnings Tuesday.

The Line Fire was spread over 62.6 square miles, with 83% of the fire contained and 1,176 personnel assigned to fight the fire as of Sunday.