Arizona shooting spree suspect arrested after leaving 4 dead.

A man has been arrested in Arizona in connection with a series of shootings that left four people dead and one woman injured. Iren Byers, 20, has been charged with four counts of first-degree murder and one count of attempted first-degree murder. Byers admitted to the shootings after ballistics at all five scenes led authorities to him. The investigation is still in the beginning stages, and the motive for the shootings is unknown. Mesa Mayor John Giles has expressed his condolences to the victims' families.