Authorities in eastern Arizona say they may never know what motivated a gunman to open fire inside a bar, killing two people and wounding two others.
Globe Police Chief Dale Walters said Tuesday that investigators have found no criminal history in the background of 22-year-old Sterling Randall Hunt.
Authorities say Hunt was playing pool with a group at Jammerz Bar late Sunday when a few of them went to a back patio.
Hunt left but returned and began shooting.
Walters says 44-year-old Cristi Licano and 22-year-old Daniel Albo died at the scene.
Ashley Sanchez and Charlene Peak, both 20, were airlifted to Phoenix hospitals.
Sanchez remains in critical condition and Peak in stable condition.
Walters says Hunt will be charged with two counts of first-degree murder and other crimes.