U.S. Marshals Service officials say 53-year-old Michael Nolt was taken into custody Tuesday night in the Phoenix suburb of Mesa.
They say Nolt was seen allegedly buying ammunition at a store and Violent Offender Task Force members had to use a stun gun on him before he was arrested.
According to the Omaha Police Department, two people were shot and killed in a home early Saturday morning. Officers found Malquan King, 26, and Arelius Hassell, 23, dead inside the home around 2 a.m. They also found a woman, Tommynique Valentine, 25, who was treated for a gunshot wound and later released from Nebraska Medicine.
Nolt allegedly was involved in a verbal altercation with several people at a party last Saturday and allegedly shot three people.
Federal authorities say Nolt has an extensive criminal record with previous arrests for fraud, strangulation and battery.