Bent chain links on the six-foot high fence appear to be where the mountain lion got in.
The shooting occurred about 8:20 a.m. in the 6300 block of Moonstone Avenue, authorities said.
The FAA has granted a Southern California company the first permission for commercial drone flights over land.
Wildlife experts are calling for state officials to take action after three local mountain lion kittens were fatally struck by vehicles in recent weeks.
A sighting of three large mountain lions Sunday had residents of one Saugus neighborhood on edge.
Officials believe a mountain lion has managed to cross at least two freeways to settle down at Griffith Park.
A pair of mountain lion kittens found in the Santa Monica Mountains could signal a threat to the species locally, wildlife officials warned Friday.
A 15-month-old mountain lion was killed while trying to cross the San Diego (405) Freeway in the Sepulveda Pass, authorities said Wednesday.