At the end of The Hunger Games (2012) we see head game maker Seneca Crane lead into a room that's Empty except for a single bowl of Night Lock berries. The same berries that Katniss and Peeta used to force the Capitol hands. The implication being that Snow is forcing Crane to kill himself. Starve, or eat, you die. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.