Which is the best place to watch the fire on fire?

SANDY, Calif.

— A fire burning on the outskirts of a small town in the Central Valley sparked an evacuation Tuesday night.

Authorities in San Diego County were sending the sheriff’s department’s hazardous materials unit to the scene, which is a wildfire that had been burning for two weeks.

The fire, about 20 miles north of San Diego, was reported Tuesday night about 10:40 p.m. in the town of Sutter, about 45 miles west of San Francisco, the sheriff said.

The sheriff’s office reported it was not clear whether the fire was deliberately started.

Fire officials were trying to determine how the fire started and whether it was caused by natural gas or by human activity.

Firefighters in Sutter were not allowed to enter the area until fire authorities confirmed there was a fire, according to the San Diego Fire-Rescue Department.

The cause of the fire, which was not immediately known, was under investigation, said Sutter Mayor Mark Lopes.

He did not immediately know when the fire could be contained.

The Sutter Fire Department tweeted Tuesday night that it was still “on the ground.”

It is still under investigation as to why the fire got started in Sitter.