Wife of former Bills tight end Buster Barnett killed by mistress

The girlfriend of former Buffalo Bills tight end Buster Barnett kidnapped and killed his wife, then committed suicide, according to authorities in Clayton County, Ga.

Lisa Brown kidnapped Sandra Barnett, a 49-year-old school teacher, from her home on Wednesday afternoon. After a brief high-speed chase, Brown abruptly stopped the Dodge Durango she was driving in the middle of Interstate 20. Police say Brown shot Sandra before turning the gun on herself.

"Sandra was actually on the telephone with a friend when Lisa showed up at the front door," Clayton County Police Capt. Richard Gandee said, according to 11alive.com. "Lisa Brown was actually driving a vehicle owned by Buster."

Brown, also an Atlanta-area school teacher, had been engaged in a long affair with Buster and had previous legal troubles.

"Lisa Brown was actually on probation for kidnapping out of the state of Texas," said Gandee. "She had kidnapped her child that she had lost custody of, and the jurisdiction down there had to track her for like three days to find her."

Sandra's co-worker Nimet Muhammad described her as a "bubbly, happy spirit" and someone who could be counted on.