Man found guilty in murder plot on Plymouth Township family

DETROIT – A 23-year-old man has been found guilty of conspiring to murder his former girlfriend's family in their Plymouth Township home.

A jury on Thursday convicted Michael Rivera on four counts of conspiracy to commit murder, one count of assault with intent to murder and one count of felonious assault.

Prosecutors said Rivera stood outside the home last October and sent text message instructions then 15-year-old Roksana Sikorski on how to fatally stab her family members.

Prosecutors said Sikorski used a knife to cut her 12-year-old brother's neck and tried to stab her younger sister before stopping.

Sikorski is facing the same charges as Rivera and is slated to go to trial in the fall. She's being tried as an adult.

Defenders: The latest in the Roksana Sikorski case

View: Text messages exchanged between Sikorski, Rivera (**WARNING: Content may be graphic for some viewers**)

Read: Teen charged in murder plot breaks silence