A Canadian woman has been convicted of killing her friend after police discovered the murder weapon used in a picture of the pair on social media.

21-year-old Cheyenne Rose Antoine pleaded guilty on Monday to killing 18-year-old Brittney Gargol in Canada two years ago.

Gargol was found strangled to death near a landfill in Saskatoon, Saskatchewan with Antoine's belt near her body.

Antoine was sentenced to seven years for manslaughter.

She was identified as a suspect after she posted a selfie on Facebook of the two of them, showing her wearing the belt hours before Gargol died.

Source: BBC News