LITTLE CANADA, Minn. — A woman reportedly high on methamphetamine stabbed her friend outside a Little Canada residence over the weekend, authorities say.

Clarissa Jean Martin, 30, was charged Tuesday, Aug. 6, with two counts of second-degree murder in Shayna Mae Fairbanks’ death, according to the criminal complaint filed against Martin in Ramsey County District Court.

Martin’s boyfriend called police after his girlfriend came into his parents’ Little Canada home Sunday night covered in blood, the complaint said.

When he asked her what had happened, Martin reportedly told him that she’d stabbed Fairbanks in self defense.

Police found Fairbanks’ body lying partially on the back seat of Martin’s Chevy Cruze, which was parked in front of the home, the complaint said. Police suspect Martin dragged her to the vehicle from her boyfriend’s Kia Optima, according to the complaint.

While en route to get treatment for her own wound, Martin reportedly was recorded in an ambulance saying she “pushed her and grabbed the knife. I didn’t mean to,” the complaint said. As well as “I don’t know how many times I stabbed her.”

She was also overheard saying that she’d taken Percocet 24 hours before the stabbing and smoked methamphetamine about an hour before, authorities say.