NEW : Police say third victim was targeted , other attacks were random , Anderson affiliate reports . two people are dead and two are critically injured . Authorities release names of Four victims . Four shootings occur within an hour in America , police say .
NEW : Police say first victim was targeted , other attacks were random , CNN affiliate reports . Three people are dead and two are critically injured . Authorities release names of four victims . Four shootings occur within an hour in south Omaha , police say .