A jury heard a young man confess to strangling his mother with rope in a videotaped statement Wednesday.

Twenty-year-old Keshroy Bristol's confession was played at his first-degree-murder trial. He is accused of killing his 49-year-old mother Beverly Parker last year.

Bristol denies having any role in his mother's death at the start of the videotaped interview with a police detective.

"I did not kill my mother," Bristol said.

The officer questions how the young man could have seen his mother lying face down outside their home, through a foggy door and not bother to go out to help.

"You didn't call out to her," the detective said. "You didn't do anything because you already knew she was dead."

"I'm sorry I didn't jump outside and go to her. I didn't do that. I just froze," Bristol told the detective.

Four hours after the interview began, another officer comes in and the questioning becomes more aggressive. 

"You hit her?" said the detective. "I hit her and I just started strangling her and she fell on the spot where she landed," Bristol replied.

"What did you use to strangle her?" the detective asked. "A rope," said Bristol.

The young man then tells the detective, officers would find the rope he used hidden in a couch, along with rubber gloves in a VCR and dark clothing in the basement.

Bristol told police he killed his mother after she gave him an ultimatum, either let her adopt his baby daughter or move out.

Officers asked Bristol if he acted alone and he told them the mother of the child put him up to the killing.

On Monday, Bristol's younger half-brother, Jemson Parker testified in court that when he found his mother lying face down in the snow at their Mill Woods condo in February 2008, he called 911 to get help.

The court heard the 911 call made by Parker that day.

"She's laying in our front yard with her face flat down in the snow. It doesn't seem like she is breathing."

Paramedics did arrive at the scene to treat the woman, but she was pronounced dead upon arriving at the hospital. The two emergency workers who responded to the scene testified that the woman was unresponsive when they arrived and they were unsuccessful in getting her breathing again.

Both paramedics said they noticed what appeared to be ligature marks on her neck.

The trial continues Thursday.

With files from CTV's David Ewasuk