The Brief A 23-year-old autistic man from metro Atlanta was killed in a violent attack at a Minneapolis mental health facility. Family members held a news conference on Friday demanding accountability and questioning facility staffing levels after four other patients were also injured. Police charged Dereck Duane Faulkner with attempted murder and assault in connection with the deadly rampage. The family of a 23-year-old metro Atlanta man is demanding answers after he was killed during a violent attack at a Minneapolis mental health treatment facility. Minneapolis mental health facility homicide What we know: Bryce Hayes, a Grayson High School graduate who was autistic, died Monday after being assaulted at The Nancy Page Crisis Residential Center in Minneapolis. Police said suspect Dereck Duane Faulkner went room to room inside the facility, attacking residents with a fork and fire extinguisher chemicals. Hayes was found with life-threatening injuries and later died. Four other patients were injured during the attack. Hayes' family held a news conference on Friday to speak out publicly for the first time since the assault. Family members described Hayes as a quiet, loving, and polite young man who had recently moved to Minneapolis to pursue independent living. There is nothing he could have done to deserve this, family members said. He is the most gentle person, respectful... he would not hurt a fly. Faulkner was out on bond from two late August incidents at the time of the attack. He had previously been arrested for attempted murder after allegedly shooting a rifle at a co-worker, and was charged days later with assaulting four emergency room employees at a Minneapolis hospital. Security concerns and legal action What they're saying: Attorneys representing the Hayes family questioned the safety protocols and staffing levels at the crisis center, asking why non-violent patients were housed alongside individuals with a history of violent behavior. Some of those boil down to staffing. Are there enough staff working to monitor everyone at the facility? family attorney L. C #fox26houston #crimewatchhouston