A 960-acre brush fire sparked in the West Hills area near the 101 Freeway Thursday afternoon. The Los Angeles Fire Department said that the fire was quickly burning toward the south, relatively close to homes before they were able to establish perimeter lines.

On Thursday night, the Kenneth fire was being investigated as a possible arson, and a person of interest was detained, officials said. The fire grew quickly to engulf 960 acres near Victory Boulevard west of Gilmore Street and was headed south towards Hidden Hills, fire officials said early Thursday evening.

VIIRS/MODIS satellite hotspot data is updated daily in the morning with the red dots indicating which direction the fire is moving. The color of the dots shows how recent the data is (red is today, orange yesterday, yellow two days old). Perimeter data is updated by Cal Fire twice daily.