Al Jazeera has obtained footage of the disfigured body of a 15-year old Syrian boy.

Thamer al Sahri was arrested in April for participating in an anti-government protest. His body was released on Wednesday.

The video comes from a reliable source, but we are unable to independently verify it due to restrictions on journalists in the country.

Al Jazeera's Stefanie Dekker reports, with a warning that viewers may find some of the images in the report disturbing.