Firefighters extinguished two brush fires in the Pocatello area on Tuesday before either blaze could damage any structures or cause any injuries. One of the brush fires occurred in the mountains south of Pocatello while the other ignited on the Gate City's east side. The first and larger of the blazes was reported around 4:30 p.m. Tuesday in the area of East Fork Mink Creek Road and Lead Draw south of Pocatello. Pocatello Valley and Bureau of Land Management firefighters responded to the fire and had it extinguished by 9 p.m. Tuesday. The fire scorched at least 10 acres of mountainous terrain and its cause remains under investigation. The second fire ignited around 7 p.m. Tuesday during a thunderstorm and was caused by lightning striking a tree in the area of the disc golf course off of East Terry Street on Pocatello's east side.