Fire crews battled a second grass fire in northeastern Oklahoma City on Sunday afternoon.
A fire that began at 11901 N. Eastern Ave., about 4 p.m. burned 9 acres over more than an hour before firefighters could extinguish it, Maj. Tammy McKinney said.
No structures were damaged, McKinney said.
Officials still are working to determine the cause of the blaze.
Another grass fire burned in the same vicinity earlier in the day.