Follow CNN Body cam video shows police officer's fatal shooting of a Black man during a mental health check Police body camera video shows Patrick Warren at his residence. (CNN)The chief of police in Killeen, Texas, is defending an officer who shot and killed a Black man during a mental health check earlier this month. Officer Reynaldo Contreras arrived at the home of Patrick Warren on January 10 after Warren's family called for psychiatric help. The police department said in a statement that, upon the officer's arrival, Warren was "emotionally distressed," and newly released body camera footage shows the tense moments that led to Contreras firing his weapon at Warren three times.