According to KTRK-TV, authorities say Scott Bowman responded to an ad from a man who claimed to be giving away a dog.
According to Bowman's fiancee, the man insisted on delivering the dog to Bowman's home.
Police say Bowman and the man got into a fight, and the man shot Bowman in the chest while his kids were in the room.
The man has been arrested, and police are continuing to investigate the incident.
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