Yes, Peace keepers came in and beat him and in the movie it appears he may have died, but in the Книги it is assumed that he was beaten than killed during interrogation .
I haven't read the book yet, but this is what I've worked out from how I've seen others reply to similar questions: he wasn't killed immediately just before Katniss entered the arena for the 75th Games. Then he was just badly beaten up. However, he was imprisoned, interrogated and later killed. I don't think he reappears before his death.