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GLEN ROSE, Texas (AP) - A Texas sheriff has told local newspapers that author and former Navy SEAL Chris Kyle has been fatally shot along with another man on a gun range.

The Fort Worth Star-Telegram and Stephenville Empire-Tribune report that Erath County Sheriff Tommy Bryant says the 38-year-old Kyle and a second man were found dead Saturday afternoon at Rough Creek Lodge's shooting range west of Glen Rose.

The Star-Telegram reports that witnesses told sheriff's investigators a gunman opened fire on the men, then fled in a pickup truck belonging to one of the victims. Glen Rose is about an hour southwest of Fort Worth.

The newspapers say a 25-year-old man was later taken into custody in Lancaster, southeast of Dallas. The motive is unclear.

Kyle wrote the best-selling book, "American Sniper."