A badly injured and malnourished 11-year-old boy told police he was punished because he "lied and stole," but also told them his father didn't deserve to be in jail, according to videos played at the child abuse trial of his Mountie father and stepmother.

The two lengthy videotaped interviews with the boy, who is now 13, were shown in a courtroom at the Ontario Superior Court in Ottawa as his 44-year-old father and 36-year-old stepmother looked on.

Each is facing the judge-only trial for aggravated assault, forcible confinement and failing to provide the necessaries of life. The woman is also charged with assaulting the child with a weapon, while the man is charged with sexual assault causing bodily harm and assault with a weapon.

Both have pleaded not guilty. Neither accused can be named to protect the identify of the boy.

The Mountie was suspended upon being charged in 2013 and remains suspended without pay, RCMP said.

Protected cubicle for boy

The boy sat in court Wednesday in a protected cubicle as more than an hour of video interviews he did with police were played. He spoke to police after his parents were arrested in February 2013.

From a hospital bed, the boy spoke to police with a cast on his left arm as his face looked gaunt with dark circles around his eyes, the CBC's Laurie Fagan reported.

His ankles and wrists were also covered in fresh scabs caused by being chained. The boy also showed the detective fading brown spots on his chest where he alleged his father burned him with a barbecue lighter.

"I lied and stole," the boy told police in the video, explaining why he was punished.

In court, the Crown asked the boy if everything he told police was true. The boy answered yes, but added he was touched inappropriately.

He had denied that in police interviews.

"I dont want to blame him," the boy told police in the video regarding his father's alleged actions. "My dad doesn't deserve to be in jail."

As the videos played in court, both parents kept their heads down.

Courtroom falls silent

On Tuesday, the courtroom fell silent and the judge at one point shielded his face from onlookers as videos of the boy, naked and restrained in the basement of his family's home, were shown.

The five videos, made one month before the couple was arrested in February 2013, were found on the father's cellphone.

They show the small boy, breathing heavily, with his ribs sticking out. In the videos, a man is heard repeatedly taunting and humiliating the boy, who was tied to the basement wall.

People in the courtroom could be seen wiping away tears, and the last video left Justice Robert Maranger shielding his face from those in court, who were left in a stunned silence, Fagan said.

The father has previously admitted in court to restraining the boy with a chain and plastic ties.

On Monday, the court saw the stepmother's police interview video, which was taken after her arrest. She told officers that her stepson was "out of control" and that she feared for her safety, but denied any wrongdoing.

In 2013, the RCMP said the father had been on leave since May 2011. The reason for that remains under a court-ordered publication ban.

Police sources previously told CBC News the man was a member of the force's counter-terrorism unit.

The trial continues on Thursday.