A third man who participated in the theft of a letter carrier’s master key to steal people’s IDs for tax-refund fraud pleaded guilty Tuesday in Miami federal court.

Wilfred Georges, 24, admitted he robbed Bruce Parton, who worked out of the Norland Post Office and was fatally shot in December 2010 while delivering the mail. Georges faces 15 years in prison for his role in the crime.

In January, Pikerson J. Mentor, 31, of North Miami, was sentenced to life in prison for fatally shooting the 60-year-old Pembrokes Pines resident.

Dwayne Politesse, 25, the getaway driver also from North Miami, pleaded guilty, testified against Mentor and was sentenced to 21 years.

The trio participated in a plot to steal Parton’s master key so they could access mailboxes — and the personal financial information inside the mail — belonging to residents of North Miami-Dade apartment complexes, according to the U.S. Postal Inspection Service.