In a video from Mexico, a man strapped to a chair is shown being interrogated, before his captors start up a chainsaw and apparently saw off his legs with it. The cameraman really effed up on the chainsaw part.
According to the backinfo I got, the incident happened in Culiacán and the victim was a sicario for Los Chapitos. His captors, if I understood it correctly, were men under the command of El Russo (The Russian), a hanchman for Ismael “El Mayo” Zambada, a man looking to become the leader of the Sinaloa Cartel in the absence of El Chapo, and this act could be part of eliminating competition for the post.
Props to Best Gore member @natural-selection-2 for the video: