Colleen Soldo of Beatrice says her brother-in-law, Officer Igor Soldo was a victim of Sunday's shooting. Authorities say a man and a woman ambushed Soldo and another officer as they were eating, fatally shooting them.
Police say the shooters then fled to a Wal-Mart, where they killed another person before killing themselves.
Colleen Soldo says her brother-in-law attended high school in Lincoln and worked as a corrections officer in Lancaster County.
She says he was a "great guy" who was a good father, husband, brother and officer.
Las Vegas police say the 31-year-old Soldo is survived by a wife and baby.