Vermont Co-op Shooting

A Vermont man charged with killing his former boss at the Brattleboro Food Co-op has pleaded guilty to second-degree murder.

Richard Gagnon entered the plea Friday in Vermont Superior Court.

A plea deal calls for a 17-year prison sentence.

Police say Gagnon brought a gun to work on the morning of Aug, 9, 2011 and shot and killed Michael Martin while Martin sat at his desk.

Martin was Gagnon's superior and Gagnon had received a critical work evaluation.

Gagnon previously had pleaded not guilty to a charge of first-degree murder.