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OKLAHOMA CITY – Firefighters were able to extinguish a fire at an Oklahoma City salvage yard Monday.

Around 2:10 p.m., a fire broke out at the Square Deal salvage yard near S.W. 24th and May.

Fire officials say about 20 cars were burned.

The fire appears to have begun inside the salvage yard and spread to some grass on the outside of the metal fence of the business, Benny Fulkerson, Oklahoma City Fire Department PIO stated in a news release.

After about 30 minutes, fire crews were able to get the blaze under control.

Three firefighters who became overheated while battling the flames were evaluated on the scene.

At this time, there is no word on what caused the fire.

This is a developing story. Check back for updates.