The cause of a three-acre brush fire that San Diego Fire Department official extinguished on July 2 has been deemed undetermined. San Diego Fire and Rescue Department spokesman Maurice Luque said 9-1-1 calls started coming in around 8 p.m. regarding a fire in the brush behind the homes near the 6000 block of Bellevue Avnue. A couple kids were seen running out the canyon and up a hillside, he said. Fire crew and three helicopter water drops put out the fire quickly, Luque said. “There were no evacuations and no serious threat that we know of,” he said. The fire was not accidental, he said, like it would have been if a wire were to fall. “It was probably started by someone,” he said. “But there’s no ongoing investigation. It’s just undetermined.” The July 2 fire was bigger than another recent fire, which took place on July 29 around 2:15 p.m. near Kate Sessions Park. Luque said both fires caused no threat to surrounding structures. “We get a lot of these,” he said. “It’s a normal situation and we’re going to have a lot more.” Fire season is all the time in San Diego, Luque said, not just during the hot summer months. Most major wildfires actually happen in the fall, he said. Of the 15 most significant fires since 1913, ten have been in non-summer months. What’s one of the best ways to prevent fires? “Know what your kids are doing,” he said. “A lot of these fires are started by kids playing with matches.”