A brush fire broke out in Lopez Canyon Saturday afternoon and was under control within an hour, officials said.

The four-acre blaze burned light grass and medium brush in the 12000 block of North Lopez Canyon Road, the Los Angeles Fire Department said in an alert. The total acreage was later updated to 8.29 acres.

Joining the LAFD were the Los Angeles County Fire Department and the Angeles National Forest in battling the blaze, which took 69 firefighters 55 minutes to get under control.

As of 6:38 p.m. Saturday, the blaze was 60% contained, the LAFD said in an update, and that figure was up to 90% by 9 p.m.

“Firefighters will remain at scene tonight to check for hotspots, extinguish smoldering debris and further contain the fire’s perimeter. The cause of the fire is still under investigation,” the department added.

While no injuries were initially reported, the LAFD confirmed Saturday night that one person was taken to a local hospital for treatment.

“LAFD Paramedics assisted one adult male civilian who became suddenly ill near the fireline. He has been taken to an area hospital in undetermined condition. No other injuries have been reported,” the department said in an alert.