A brush fire burned nine acres southwest of the city before it was brought under control Tuesday night.

No one was injured in the blaze.

The fire was reported by a 911-caller shortly before 6 p.m. in a rural area west of South Mission Road and south of West Los Reales Road near West Partridge Street, said Tracy Koslowski, a Drexel Heights Fire District spokeswoman.

Firefighters battled the blaze and kept it from spreading to houses in the area, Koslowski said. The fire was brought under control shortly before 8 p.m.

The fire spread onto land on the Tohono O'odham Nation, and at one point flames shot 12 feet high, said Koslowski.

Drexel Heights firefighters received assistance from the Tohono O'odham Fire Department, Green Valley Fire District, Northwest Fire District and the Pima County Sheriff's Department.

The cause of the fire is under investigation, Koslowski said.