Police in western Mexico have discovered the bodies of 21 men.
Officials said Thursday the victims were found in various locations outside the city of Morelia in Michoacan state.
Police say the victims appear to be between the ages of 20 and 35 and some showed signs of torture.
Authorities say some of the bodies had warning notes attached. One read "here are the thieves, muggers and rapists, and there are still more to come."
It was not immediately clear who was responsible for the murders.