Evacuations were ordered within a four-mile radius of the intersection of State Highways 7 and 65 east of Lawton. (Google Maps)

LAWTON, Okla. (AP) — A grass fire near Lawton in southwestern Oklahoma forced evacuations in the area on Friday, emergency officials said.

There are no reported deaths or injuries due to the fire, according to Comanche County Emergency Management spokesperson Amy Hawkins.

Some roadways in the area were also closed due to smoke, according to the Oklahoma Highway Patrol.

Hawkins said it is not known how many people were forced to flee nor how large the fire is or how many homes or buildings are damaged.

The cause of the blaze was also unknown, Hawkins said.

“We probably won't know what started it, it could be something as simple as someone throwing out a cigarette butt,” Hawkins said.

Firefighters from at least 10 area departments worked to contain the blaze that was burning about five miles (8 kilometers) east of Lawton and about 10 miles (16 kilometers) east of Fort Sill and moving northeastward away from the city and Army base, according to Hawkins.

Winds were gusting to 25 mph (40 kph) in the area, according to the National Weather Service.

The weather service had issued a warning that weather conditions in the area were producing an increased risk of fire danger.

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