An inmate at the Yavapai County Jail, 36-year-old Levi Jones, from Phoenix, has been sentenced to an additional 20 years in prison after investigators uncovered that he orchestrated multiple criminal conspiracies while incarcerated.

The investigation began in 2017, when Yavapai County Sheriff’s deputies learned Jones was plotting serious crimes, including conspiracy to commit murder and witness intimidation.

The most serious conspiracy involved a murder-for-hire plot and efforts to intimidate key witnesses connected to Jones’s ongoing murder case, the Oct. 10, 2016, killing of Kyle “John” Warren Silva, who was fatally shot at a Camp Verde gas station.

Detectives uncovered communications that detailed Jones’s plans. He offered to cancel a prison debt owed by another inmate in exchange for the murder of a co-defendant witness, a 37-year-old Camp Verde woman also arrested in 2016.

Jones also provided another inmate with the personal information of several witnesses and urged violent intimidation to coerce changes to their testimony.

Jones was sentenced in September, in part for conspiracy to commit aggravated assault and promoting prison contraband, to an additional 20 years in prison.

The Yavapai County Sheriff’s Office commended the professionalism and persistence of the investigative team and detention staff, whose diligence detected and prevented these plots from being carried out.