Mich. couple charged in murder plot on teen's family

PLYMOUTH TOWNSHIP, Mich. -- A teenager and her 23-year-old boyfriend have been charged in an alleged plot to murder her family and run away, reports CBS Detroit.

The 15-year-old girl is accused of stabbing her 12-year-old brother in the throat and attempting to stab her younger sister. The incident happened on Oct. 17 at the family's home in Plymouth Township, Mich. The boy was hospitalized with multiple stab wounds.

The girl's boyfriend is alleged to have been outside the house sending text messages with instructions for carrying out the crime.

Both suspects are being held on a $1 million bond.

He is charged with four counts of conspiracy to commit murder, one count of assault with intent to murder and one count of felonious assault.

At her arraignment Thursday, the girl was charged as an adult with four counts of conspiracy to commit murder, and one count of assault with intent to murder.

Prosecutor Kym Worthy said in a statement that it is rare for her office to charge a 15-year-old suspect as an adult.

"The alleged facts in this case strongly warrant this decision. The alleged actions of this defendant and her co-defendant, to conspire to kill her entire family, are truly haunting," said Worthy.