03/20/2012 11:07 EDT | Updated 05/20/2012 05:12 EDT

Ex-boyfriend acted alone in teen slaying, co-accused says

One of the two people accused in the stabbing death of a 13-year-old Mississauga girl told a court on Tuesday that the co-accused — her former boyfriend — acted alone.

Michelle Liard and Rafal LaSota, both of Mississauga, have both pleaded not guilty to first-degree murder in the death of Aleksandra Firgan-Hewie.

Liard told the jury that LaSota killed Firgan-Hewie, the teenager who was stabbed 37 times in December of 2008. Firgan-Hewie's body was allegedly left in garbage bags outside LaSota's house.

The testimony in a Brampton courtroom was the first time friends and family heard a description of her slaying from one of the people on trial.

Liard told the jury she asked her friend Firgan-Hewie to come to LaSota's house to talk about a statement they were going to give to police about a robbery.

Liard said she went outside for a cigarette while LaSota stayed up in his room with Firgan-Hewie. When she came back inside, he wouldn't let her into the room.

Liard testified that she saw LaSota had blood on his face.

"I moved back, I started freaking out," Liard said. She said LaSota "looked like a zombie."

LaSota told her he had done something terrible. She testified that he said, "I think I've killed Alex."

Liard testified that she asked LaSota why he did it and he replied that he didn't know.

Her testimony is scheduled to continue on Wednesday.