Updated 6:13 p.m.:
Spontaneous combustion of mulch, debris and green waste sparked a wildland fire that scorched five acres Saturday, officials said.
No injuries were reported in the blaze, which was contained about 3 p.m., according to fire officials.
A wildland fire broke out in Coachella Saturday, burning some four acres in 30 minutes.
The slow-moving blaze was reported on Avenue 53, near Fillmore Street, at 11:48 a.m., according to Cal Fire/Riverside County fire information officer Melody Hendrickson.
By 12:09 p.m., the fire had spread to between three and five acres, Hendrickson reported.
Some 90 firefighters were at the scene and they expected to remain there for about six hours, Hendrickson said.
The blaze started in heavy brush and its cause is under investigation, she said.