The trial against an Arizona man, Cleophus Cooksey, accused of allegedly carrying out eight murders over three weeks that ended with the killing of his own mother in Phoenix in 2017, began this week.

Cleophus Cooksey Jr., charged in eight killings eight years ago in the Phoenix area, including those of his mother and stepfather, has gone on trial.

Mother of Phoenix serial killer's victim speaks out 02:32. Police in Phoenix say they've identified a suspected serial killer responsible for a string of murders. Thirty-year-old Cleophus Cooksey ...