A former Penn State fraternity brother has entered the first guilty plea in connection with the death of pledge Tim Piazza, who died after falling down fraternity house stairs during an alcohol-fueled hazing ritual, prosecutors said. Ryan Burke, who was accused of forcing Piazza to drink from a bottle of vodka the night of his fall, pleaded guilty Wednesday to four counts of hazing and five counts relating to unlawful acts involving liquor. Burke, now 21, admitted to his role in the hazing and will be sentenced on July 31, according to prosecutors.