Crews from the San Ramon Valley Fire Protection District extinguished a fire in the Alamo hills Thursday afternoon. Officials said the blaze was human caused.
"We don't know exactly how they did it, but an investigation is under way by CalFire," said Jack Barton, San Ramon Valley assistant fire chief.
The fire was first reported at 4:52 p.m. at the end of Hemme Drive in Alamo, which backs to Las Trampas Regional Wilderness. Crews from CalFire, San Ramon Valley Fire and the East Bay Regional Parks Fire Department hiked into the hills to extinguish the blaze, which took a little over an hour.
No injuries were reported.