The 40-year-old San Augustine man remains in the Nacogdoches County Jail with bond set at $2 million.
Prosecutors have charged Barnhill with murder in the slaying last month of 38-year-old Melissa Kesinger Barnhill.
Police say the Barnhills had separated and were divorcing when the woman was fatally shot through a kitchen window of her Nacogdoches home March 11.
The defendant was arrested March 16 in the Eagle Pass area, about 500 miles from Nacogdoches, and returned to East Texas.
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