Photo: San Diego Fire and Rescue

Update August 2, 2019 ,11 a.m.  The Caliente Fire is 60% contained at 490 acres. An arson investigation is underway; Fox 5 interviewed a witness who saw teen boys fleeing scene when the fire began.  NBC 7 reports two businesses burned, but no homes were lost.

Update August 1, 2019, 8 p.m.  The fire has burned 490 acres and is 50% contained. Around 70 structures were evacuated but none were lost. A pallet fire caused explosions, but no one was injured, Chula Vista Fire reports. Evacuation orders have been lifted and all roads are now open.